Seriously, they are. This is by far the most important issue, if they made their asses fatter it would improve viewership. If they made the ponies thicc prudes would complain, which would only draw in even more viewers. Twilight Sparkle, the protagonist of the series has a fat ass, and her teacher Princess Celestia, who's ass is even fatter.
The main reason is uncanny valley. When something looks human but not quite. A perfect example would be a robot trying to mimic being human, it looks unsettling. It's somewhat insulting towards the ponies, you have Twilight Sparkle there a beautiful unicorn and you can't embrace her just because she's not fully in human shape, even though she has all the qualifications to be a sapient-minded
I am sorry about this blog, but anime as in japanese cartoons made in japan are under attack by western moral puritans, because it doesn't adhere to their moral standards. This strikes me as a very imperialistic mindset, not everyone has to adhere to our values.
That could become a plot Point in friendship is gigantictimal. You could combine this with my driving test instructor idea from a while back. Celestia trying to master the art of the Undercover-giant-booty, while posing as much smaller, (but still giant) Version of herself...
Then she's gotta have the universe's strongest booty if it can cause earthquakes and shit.
If this was true, then Equestria would be destroyed, constantly. I think, it's something about that throne of hers, but who knows?
It would be fun to read about if she did.
"Tia-quakes"
Yes. But they don't call them Earthquakes.
They call them booty-quakes.
She also farts solar flares
That could become a plot Point in friendship is gigantictimal. You could combine this with my driving test instructor idea from a while back. Celestia trying to master the art of the Undercover-giant-booty, while posing as much smaller, (but still giant) Version of herself...