Since Brendan Eich's ouster, he has tweeted only three times.

The last tweet contains a cryptic message which is understandable to those who know *nix shell programming, which I do.

He is saying that Mozilla is treating him as if he funded a group which was advocating racial re-segregation.
(Which, as an aside, would still be his right, even if most would, I would say justifiably, disagree with it.)

He ends his tweet with "is a f-ing scary place right now."

*THIS* is our United States under this Ruling Class: an IT *genius*, an ex-CEO, an *American Citizen*... living in fear, *fear*.