I agree. I didn't care for the comic either. I HATE how they changed the reason why she becomes Jem. Also I don't like how they changed the originality of the characters. I felt that Jem was already a very diverse cartoon for its time. I respect and appreciate the sentiment about them making it even more diverse, but make a NEW character. Don't change the originality of the characters.
I think the comics are awful too but not for those reasons.
The Jem characters are young women, the comic characters act like entitled millenials. There's too much "aren't they fun and quirky girls!!!" going on. Though I get that's the demographic they're aiming for and this is part of making a "modern update". It doesn't sit well for me.
Also there's so many references to other works, once in a while is fine but its creeping into unoriginal territory.