If you read the article you’ll see that the author takes issue not with the inclusion itself, but the hamfisted way in which it is included. Pandering can be fine, but when it’s just checking boxes in a cringy, lazy way it’s not, and worse it becomes fodder for the gamergate type to rage about.
Did you read the article? I found it pretty convincing, as an example “non-binary” is not a word I expect to be said in a fantasy setting. The author also mentions a fantasy book where it’s done much more naturally.