Sunset was behaving like an alpha bitch and throwing her weight around, this is true and her plans for equestrian were not benevolent so we both pretty much agree that sunset was a douche but she didn’t go axe crazy until she put on the element which means she was not fully in control of her own actions.Starlight was perfectly in lucid and in control of her own actions when she started attacking people which she did just because they had the gall to get in her way. When the crowd first confronted her on her lies she lost her temper right away and started prepping a spell and the only reason she didn’t use it was because she realized she was surrounded and decided to book out of town.As you can see they were both behaving like douchebags but one was punished properly for her actions even though her worst behavior was due to an unwilling transformation while the other was not punished even though she has no such excuse. Starlight wanted to change society because she believed it somehow personally wronged her and so she wanted to replace it with something that catered exclusively to her pain and needs and equal town was the first step. Other lonely and confused ponies may have drunk the coolade with her but the presence of the brainwashing room and her willingness to use it on anyone who disagreed with her or had second thoughts is not a sign of benevolence.
@Mr grump
I also personally empathize with Starlight because I know very well how painful losing friends can be.