Yep, sounds like a bad place to work.
Just a reminder that you can change jobs after 6 months in the valley, there is really no need to put up with that or wait for evil managers to make the place hell.
There are really a lot of opportunities, if you have nothing outstanding it's not hard to get better.
What does this mean?
I'm not in the valley, but here (in Sydney) I tend to ask questions about people changing jobs in 12 months or less, and more than one 6 month stint (especially consecutive ones) is a serious red flag (mostly due to local employment law and practices). There are a set of people who "interview well", but cant actually cut it in the roles they land - these people can _usually_ stick it out and fake their way through a 6 or 12 month stretch before getting fired or leaving because they know it's inevitable if they don't.
One six month stint in the middle of 18+ month stretches and you'll probably at least get an interview with questions asked about the short job (with even vaguely plausible answers "I hated the commute", "the manager I was working for left, and I didn't enjoy it as much after" would all be fine, if delivered with sincerity)
3 six month stints in a row, without provided upfront and verifiable explanations "these two were contracting engagements, that one was a company that folded 6 months after I started", you'll most likely not make it to the phone screen stage.
It's certainly different in the valley - but I still question how much a string of 6-ish month stints on your cv is gonna be read down the track...