@Looney Moon
You’re the one who is not getting it, Looney Moon.
Derpy’s portrayal in “The Last Roundup” was and is (in the non-censored version) realistic, utterly positive and respectful.
At no point did Rainbow Dash make fun of her or mock her for her disability. She only lost her patience and yelled at Derpy because of her short temper (and after getting almost crushed to death by a heavy wooden pillar), but she did not do anything that would make Derpy look like she is a lower-class person because of her disability.
The way the events unfolded and the way they were presented, all of this was completely neutral. There was no specific tone in the presentation of these events, it was completely left to the audience’s interpretation. Derpy was just portrayed how she is. Just being herself.
Which is the genius thing about it, how the audience reacted on Derpy’s appearance in “The Last Roundup” revealed their stance on disabled people.
You can view it as a normal, realistic portrayal of a pony with a disability and simply appreciate the realism. You can view it as an opportunity to relate to someone for being imperfect and for struggling with something. Or you can point at the screen and laugh, like “hurr durr, Derpy is so dumb, she messed something up again!”.
You can view her entire appearance and the presentation thereof in any of these ways, but in the end, all that was actually there was a disabled pony showing off the struggles she has with her disability.
There was no comedic intent of letting the audience laugh about the misfortune of a poor, disabled pony and if you think there was such an intent, then this is only your interpretation of it and then it reveals something rather unfortunate about you and about how you view disabled people. Namely, that you view them as victims to make fun of.
If you feel like this about Derpy’s portrayal, then you need to change how you feel about it, because then you approach it the wrong way.
There is a difference between laughing about someone, laughing with someone and laughing as a sign of appreciation and admiration (rather than mockery). And 99% of all bronies, when they see Derpy, laugh for the latter reason.
But you, if you would laugh when seeing Derpy, you would laugh for the first reason. Your entire view of her appearance and speaking role, that you believe she was presented as a joke and for the purpose of laughing at her expense, makes that so clear that you dig yourself a deeper and deeper hole the longer you argue for your point.
Derpy doesn’t have to change.
You need to change.