I do think some people might be "hate watching" She Hulk
But I also believe there are people who are huge fans of Maslany and will follow her work where she goes, and are disappointed that show doesn't give her more to work with on a regular basis.
There were many times when the writing on Orphan Black was rough. But Maslany literally carried that show on her back with sheer will, charisma and being utterly fearless. She's a legitimate acting talent.
I'm a big believer if Feige had casted anyone but Maslany, that the flaws of this show would be far more evident to more viewers.
The way I see MCU shows, the shows I don't really like usually have the elements of a good show within them. Just unrealized. I was excited about The Falcon And The Winter Soldier. And then it just fell flat. But I understand that said "good show" was trapped somewhere inside of it.
Then some people will watch She Hulk for the cameos, where the show probably relies too heavily on them.
So if I can give Jessica Gao credit for something, at least the show is attempting to be "fun" But it's her version of fun and what she'd see as fun, which is going to alienate a large share of the potential audience. Where the pushback is coming from is the complaints within the show and on social media, which is a type of marketing strategy. There is a clear methodology to try to incite the audience. If you want to make a very personal show that speaks to mostly you as a showrunner, then OK. Ryan Murphy does that all the time. But don't complain if a wide section of the potential audience doesn't like it then.
The way She Hulk is being marketed online is inviting people to hate watch it. So I don't want to hear it from Gao or Feige or the MCU about the complaints and "fandom" You couldn't make a show good enough to stand on it's own, don't gaslight people into some kind of guilt for buying into your marketing strategy to compensate for those failures.