Background Pony #37B5
Dashie haters are pure cancer.
Background Pony #2950
OP didn’t even have to try and come up with something original to make RD haters swallow the bait with line and rod.
TheOtherPinkiePie
Friendship, Art, and Magic (2019) - Celebrated Derpibooru's seventh year anniversary with friends
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Friendship, Art, and Magic (2017) - Celebrated Derpibooru's five year anniversary with friends.

Bleh...
Whoops, I think you meant Pinkie Pie.
Background Pony #FA22
@Background Pony #0CEE  
Pretty much this. But I like her for the description too.
Background Pony #F985
Right statement, wrong reason. She’s objectively best pony because she decides the fate of equestria and without her, the entirety of equestria would be screwed, as proven by the season 5 finale.
Vaidelot
Non-Fungible Trixie -
Wallet After Summer Sale -
Not a Llama - Happy April Fools Day!
Speaking Fancy -
The End wasn't The End - Found a new home after the great exodus of 2012

Humble Dash-worshipper
Indeed!
Background Pony #FA22
@Goblinette  
>liking 2nd worst pony
 
lelnope.
CrimsonDusk

Why do people come here and say shit like, well this is a load of bull, or something like that….it’s just someone trolling….don’t be idiots, your opinion is your opinion, dash is my favourite but might not be others, people need to just stop commenting on these, and before someone says why am I commenting, I’m making s point
Goblinette
Wallet After Summer Sale -

@Background Pony #97B2  
I take it you are a rarifag too?
Hory_Shet
Duck - Quacks for Rainbow Dash

She is, but I won’t say it’s objective.
Background Pony #FA22
@Background Pony #AFD3  
That doesn’t look like applejack to me.
 
@Goblinette  
>rarifags talking shit about other ponies
Background Pony #C114
So, instead of putting tags like that, why not simply delete the obvious baits before the comments turns into easy shit slinging fest?
 
Fuck I’m a dashfag and I know she’s not the best but it’s tiring to see easy baits like that used by other to just boast themselves.
Goblinette
Wallet After Summer Sale -

You misspelled Rarity… And put the wrong picture…  
Alternatively, you misspelled ‘worst’
Mojo

@Mojo
 
And mind you I actually like Rainbow Dash, she’s not my favorite but shes 4th place on my list, above Twilight and Fluttershy.
Mojo

@TechnicolorShortie
 
I didn’t say “they don’t accept it till the limit is pushed” I said “Don’t get it until ANOTHER CHARACTER slaps them into it” which is different.
 
And outside of like Wonderbolts Academy I am having a hard time thinking of other episodes where Dash has a big lesson where it’s NOT slapped into her by someone else.
 
As for Development, I think strong cases can be made for Rarity and Twilight (though frankly most of Twilight’s developments ended up making her less appealing sadly). With Dash yeah she’s changed plenty but a lot of the key episodes where that development happens frankly aren’t really enjoyable to watch. Like In Season 2 Dash get’s pretty throughly humbled in just about all her episodes that season and then yes in Season 3 you can totally see that. But most of the episodes where the humbling happens just aren’t very good. Like May the Best Pet Win is throughly meh and Mare-Do-Well is Mare-Do-Well. And then going onward you have stuff like Rainbow Falls which again, important for Dash, she learns an important lesson and helps others learn it too… andddd it’s a total failure of an episode.
TechnicolorShortie
Wallet After Summer Sale -
Not a Llama - Happy April Fools Day!

Ex-Fanfic Author
And to add to this, unlike when it’s done with other characters, Dash pretty much never realizes she was in the wrong on her own, she’s always had to have it slaped into her by others.
 
Not true. There’s a good list of episodes where the other ponies just do not get it until they have no choice but to accept what went wrong.  
Off the top of my head:  
Applebuck Season  
Lesson Zero  
Literally every single Fluttershy episode because the writers refuse to treat her as more than a one-trick pony  
Feeling Pinkie Keen  
Sisterhooves Social  
The Last Roundup  
A Friend In Deed  
Ponyville Confidential (if we include the CMC)  
Apple Family Reunion  
I would throw Spike under the bus for Spike At Your Service, but a good Spike episode is simply rare.
 
Dash has accepted the problems on her own in more episodes than not, but, much like the others, it reaches the point where whatever problem is going on they can’t solve it in any way other than the one way they were trying to avoid from the start.  
They’ve all shown development, but personally Dash has shown the absolute most over the course of the series.
Mojo

@Mojo
 
And to add to this, unlike when it’s done with other characters, Dash pretty much never realizes she was in the wrong on her own, she’s always had to have it slaped into her by others.
Mojo

@Corrderio
 
To S2? Dash was at her worst there! Almost every episode all she did was show off her worst traits.
Background Pony #B54D
OP misspelled cutest
rodriguez

ayy lmao
Flareblitzfury

Bringer of Magic
She’s alright!
Corrderio
Not a Llama - Happy April Fools Day!
The End wasn't The End - Found a new home after the great exodus of 2012

I'm outie 5000
@Mojo  
If only we could go back in time before S3 happened.
Trojan Horse

OP is objectively wrong.
Background Pony #D789
That’s not how you spell “worst”.
Background Pony #5A27
Objectively… I do not think that word means what you think it means.