Holy crap, these people are like ten heads tall. Just for reference, the average adult man is about seven and a half heads tall, and massive athletes are about eight and a half. Tweek looks tiny, but his proportions are the closest to correct here, and he's
still too tall.
This is why it's important to use reference photos, kids. Especially if you're new to anatomy.
Is Wendy supposed to be trans here? Because she looks like a linebacker and she has a super-square jaw. In fact,
everybody's face structures in these drawings are really gaunt and square, like Sylvester Stallone.
Although I'm not entirely sure this is SJW art so much as it is plain bad art. This is also the kind of bad art that you can tell was drawn by someone who's learning, not intentionally drawing bad for the sake of "style".
I think it's because Tumblr sees stuff like
this comic get passed around and are made to feel that if they make characters any shade lighter than midnight black they're still being racist, nevermind that all they're just going in the opposite direction in terms of making minorities uniform and interchangeable:
(By the way this artist works at Pixar now)
As for the ugly-fying of characters, I think a lot of it has to do with SJWs either not being attractive or not seeing themselves as such, and rather than a knowledge this as an issue within themselves they turn their frustrations out on the characters and the people who created them.
I sincerely doubt a white person actually walked up to her and unironically asked, "lol do u wish ur skin was light?" We live in a culture where white people are terrified to bring up race at all, to the point where it actually limits important discussions on racism.
What probably actually happened was that she was insecure and asking herself this. It's still a valid question and discussion to have, though. But justifying your own insecurities (caused by the racism ingrained in culture, granted), by pretending that issue isn't at all internal is just being unfair to yourself.
She makes a decent point, though. Most of the black people who make it in entertainment and such are pretty light, especially women. This is probably a result of two things: lighter people getting preferential treatment, and darker people bleaching their skin when they first make a lot of money. What you make of that is up to you, though.