It is a mistake to view all social issues as a monolith. In the US, the Women's Suffrage movement rather famously had a single-minded focus on getting white women the vote. Personally, I've met quite a few openly and unapologetically homophobic black people, as well as openly "I'm-not-racist-but"-anti-black gay people. That a company would try (and even succeed) along one axis and completely fail at another one isn't a surprise.
Concluding that this is a hit job assumes that Tesla is perfectly progressive (Musk is pretty vocally anti-progressive) both in its goals (company-level policies) and its actions (hierarchical manager-level fiefdoms). It sure sounds like individuals with enough evidence to make a case have a financial incentive to bring that evidence to the courts, though. I don't see that as a bad thing.