How do you differentiate between a character "written for the sake of checking a diversity box", a poorly-written diverse character, and a "random fact of the world"? It's a fictional world. Nothing is random. It's all creative decisions made by a team of writers and producers.

I don't think shoehorning in of diverse identities and character backgrounds is good representation or good art, and I completely agree with your point there.

But I don't think that the people driving the current backlash bother to make those distinctions.

What I see is a lot of outrage being stoked by people using the (updated) language and tactics of gamergate, and I don't think the result of that will be "better representation".

I think the result will be devs being harrassed and pushed out of an already brutal industry.