villain punishments: little to harsh?

I've been reading lately and some books have brought up a pretty good case about the punishments dealt with the villain's

discord: turned to stone for 1000 years separated from the outside world through everything but sight and ears which something of harmony decedent wouldn't no... shouldn't do

nightmare moon: first is sent to the moon which if luna and nightmare couldn't talk to each other would have drawn both to insanity but I can't confirm this. second, once she gets blasted by the element's she is literally torn off the body's soul and mind then is cast into an ethereal plane which if luna wasn't an alicorn she probably would have been driven to insanity

Sombra: is literally banished to be frozen in ice for 1000 years which actually could have made him want to kill himself if he wasn't already insane

chrysalis and the changelings: literally cast out to be doomed to death from fall or starvation by their food source itself LOVE because they were starving they had to invade treaty would have taken to long at that point but still something that shouldn't kill something sure does allot more than it should.

chrysalis: once again is cast out to fend for herself when there is little to no food for her to get around there

That's all I can think of for now these are punishments worse than death. (funny thing is all the punishments were dealt with a power that should deal with problems like that a more harmonic way)