Yes, there are some bad apples doing the accusing (pretty sure that Sarkeesian shouldn't be in that list). That was one of my points: for those people, it's a matter of power, and unrelated to any actual sexism.

That doesn't alter the fact that a) there is tech. industry sexism, b) your examples scarcely prove your assertion that the majority of loud accusers are bad apples, c) non-experts in a field can still call out problems in that field.