This exact target has made it into more than just a few institutions.

> He selectively uses research

In inviting discourse, he is also inviting "the other side" of the argument to do as much the same. I think his effort was big enough without raising the bar - why not bear the burden of evaluating the evidence alone? This memo is explicitly a work in progress, the choice to cherry-pick sources that support his conclusions is purposeful, since he is trying to demonstrate the that the status-quo might be wrong.

> climate change deniers often..

There is something of an active debate on that topic, I haven't heard of any tech worker fired for discussing the issue.

> but there is a time and a place

Did he not release to the correct forum? What is the correct time and place? I'd also note: statements have implied/pragmatic meanings. A statement like "I'd have sex with [Catherine]" would be assumed to have an implicit meaning. The memo, in contrast, is pretty explicit in its stated aim.

> then he's done that too

Well, maybe. He certainly lit a match..