The Glassdoor reviews tell an interesting tale, which is mostly consistent with Avellone’s account of events. Some early reviews (like 2013) mention similar structural problems to the ones he’s been airing so notoriously.
Also interesting is the timing: most of the negative reviews on Glassdoor started in early 2018. Well before Chris went “public” with all these issues. I think there was something, unspoken of or mentioned just in passing, that was a trigger… pissing off him, or making him remember how pissed off he used to be.
I think that criticising a company - which you left 3 years ago and seeks financing from private investors - is as unprofessional as it is unpatriotic to denounce sketchy behaviour of elected public officials. Most whistle blowers are disgruntled employees, too.