But here's an article to list some of the tropes out more explicitly:
https://baos.pub/what-happens-when-men-write-women-b89bf325c...
I admit I'm not very familiar with the Monkey Island series but literally the first paragraph of the Wikipedia article for it points out that the primary purpose of this character is to be the primary love interest of the (male) protagonist
Bonus, here's some really fun visualizations that I think you'd enjoy regardless of whether you agree with me or not :)
https://pudding.cool/2020/07/gendered-descriptions/
My point is that if you comment "A female character written by a man" as an inherent mark against something, that's still a fallacy no matter what statistics say. If you had comments about Monkey Island in particular, then it would have been best to just say that, rather than directly say that no man could ever write a good woman character.