Not a bad email, and a decent follow up on the ones that are affected. It is also a reminder that killing yourself slowly at the workplace is meaningless. Management has no responsibility to you, and no promise is certain. It’s your responsibility to take care of yourself. My take, don’t be bitter. Take the severance as soon as possible and get back on your feet. Having Google on your resume is a very good thing.
But yeah, I've got a FAANG(+? what's it called now? I think I'm in whatever the new one is called now?), and the market isn't _so_ bad, I think? But at the end of the day, the checks clear, and it's mostly on me to decide and act on the prerogative that software is just software, and I need to chill. (But it's really hard...9s are addictive...)