Okay, so I'm 5 episodes in, and so far Stargirl is legit. I've read other reviews where some were positive, some negative, and some where people who seem to be consumed with the current toxic socio-politcal tropes, where we here the typical complaints of "SJW" this, or how CW is trying to over compensate by making more female characters.
Don't listen to these guys. They are just Trump supporters looking to offload their insecurities in the hopes that someone will listen.
Before you just assume I'm a liberal for saying that, just know that just because something isn't conservative, that doesn't mean it's liberal by default. Moral of the story, think for yourself, don't carry someone else's baggage, and try watching it and see what you think.
It's a fun show. You'll like it if you can get over yourself.