I think this is absolutely fair, but part of my point is that it doesn’t often seem to happen the other way around.
Take the example of Black Panther, say - lots of people (rightly) appreciated that it was welcome to see a predominantly black cast leading a superhero movie like this, with a black lead actor/character.
At the time, I didn’t hear anyone say “yeah he’s black but he’s still a man, they could have made it a black woman instead”. I’m not sure why that is, when both GITS and Captain Marvel have been criticised in that way - and I guess you could argue it both ways.
Either that it shows that race issues are lower down the hierarchy of concerns, so having a black lead is more of a triumph; or that gender issues are lower down the hierarchy of concerns, as evidenced by the fact that people are less celebratory of a female-led movie and are still trying to find ways to criticise it, suggesting it doesn’t have that same broad support.
(It’s also worth noting that I think that Black Panther makes a good effort to introduce more fully-formed - and just more in general - female characters in its supporting cast, and Captain Marvel and GITS both seem to have made an effort to populate their supporting casts with non-white actors, so I think that intersectionality actually is happening even if people are complaining that it isn’t.)