I've always wanted to work for Musk, but never felt like I was skilled enough to work on spaceships or cars... But Twitter? I am thinking about applying, so go ahead and quit.
80hr+ in-office work weeks with no equity and the threat of being instantly fired for appearing disloyal in Slack or correcting the CEO... sounds fun!
Also maybe don't say your employer is a "petulant man child" in Slack or otherwise undermine them and you'll be fine. The idea that an employer should keep people that actively dislike like him or her is insane.