They pretend to adore her because she's a disgusting fat hippopotamus. It's a self-humiliation ritual. "Look at me, I'm willing to debase myself by claiming this grotesquely fat cunt who somehow still has no tits is stunning and brave! LOOK AT HOW FUCKING DISGUSTING THIS CREATURE IS! I'm such a good person, I'm willing to call that hot! Now give me my internet likes!"

It's incredibly funny when you realize what they're actually saying. It's a backhanded compliment.