This is true, and the what the former employee tweeted was somewhat unprofessional, despite the fact that it feels like the rug was pulled out from under you.
Hey this is just the new progressive playbook, it's OK to hate on big corps and "billionaires".
Check out what this game producer tweeted about her own CEO RE her own unreleased game:
https://i.redd.it/yu9im5p38ld81.jpg
Unprofessionalism for miles.
I do hear that hate a lot. People will sneak in "billionaire" and "big business" like it's an inherently bad thing, and the audience is supposed to just agree, without any further explanation. Not that those groups can't be bad, but there are absolutely small businesses with poor ethics and large companies that are good corporate citizens.