Eh, most of the incel annoyance I saw was aimed at the "I can control my rage because I'm doing it all the time because I'm a woman" which....Yeah, I don't think that's a great line, but I also don't care much.
I see so many people getting hung up over if that line is true, but that's not the important part. What really matters is if its in character for Jen to say that, and I think it absolutely is something this version of Jen would say. Doesn't matter if it's actually the reason she's better at handling her anger, it's definitely what she'd say in an argument with Bruce. Sure it's an over-simplification at best, and probably wildly off-base in some aspects, but it's still very much in-character. She's not delivering some well-researched thesis on why Bruce's abusive childhood, and suppression of his rage have left him unable to deal with anger on a very basic level. She's trading barbs with her cousin in a oneupmanship contest. I know women who would make very similar arguments, even if they'd admit that the real issue is more complex were they really pressed about it.
That said, Jen does have a point about how having to deal with anger on a regular basis makes you much better at dealing with it than just repressing it until you explode. It's not because she's a woman and Bruce is a man, it's because Bruce had an abusive childhood and was taught to repress his emotions. I saw someone on Twitter comparing it to being able to swim. Jen can swim just fine because she's been in the water regularly her whole life. Bruce can't swim because he's only been in the water when he's been dropped into the deep end, and then into the middle of the ocean as Hulk.
I think one of the reasons why this statement is so polarizing for comic book fans is that we've been trained to accept a character's statements about their powers as the Truth, or at least as close to a capital T as you can get in a fictional world subject to retcons. Comic writers use characters talking about their powers as a way to inform us about how the fictional world works, and it's rare for characters to have Rashomon moments when talking about their super abilities. When a character says "my powers work
this way", then that's how their powers work, like 99% percent of the time (until they're retconned). So when Jen says "I have more control because I'm a woman", nerds take that as the writers telling us how She-Hulk's powers work, not as a character saying something from a biased viewpoint during banter with her cousin.