You need to learn to read then.

There is a difference between being angry and borderline/actual harassment. Ignoring requests to cease contact and calling someone racist without cause are crossing a line from the former into the latter. And those actions coming from a "professional" is enough to warrant a letter to this individuals boss.

This writer seems to have just cause, and despite a relative wall-o-text, makes his case rather thoughtfully.

I thought it was quite well written and informative. I can't comment on the veracity of the post though as I know nothing about the author.

Yeah, I dunno why his writing screams self-promoting crank to me, but something about it does. He's been posted here before, and he's a big deal in the ios security community. According to him.