She didn't "talk about one's experience as a female developer", she implied a semi-important figure in the community was interacting in bad faith, when such a conclusion is non-obvious. She colored her view of the interaction with her own prejudices, and responded disrespectfully because of that.

That's unprofessional to do

No, she didn't. She said that a semi-important member of the community was not an experienced video game writer, which is accurate as far as I can tell. She also said that this was an example of the trend of people who aren't experts in a field trying to correct women who are experts. Assuming he is in fact not a video game writer, this is also factually true. She didn't suggest bad faith, just that the behavior is irritating.

>She also said that this was an example of the trend of people who aren't experts in a field trying to correct women who are experts. That is also factually true

This is true of non-women, in any field

Sure, it happens to men as well, albeit less often. That doesn't make it any less irritating for women. And remember, the other person who got fired was a male colleague who simply pointed out that he didn't have to deal with that much nonsense and he didn't think she should either.