One thing that's getting a little lost in this mix, is that some of the people desperately holding on at Twitter are because they are trapped by either healthcare or visas.
That there are systemic traps that trap worker in America so they feel unable to move freely to new employers who want them and would have better pay or conditions is *nuts* and deserves a lot more attention than it gets.
@Pwnallthethings also people waiting for employer sponsored green cards. this process takes years and makes the functional slaves. My former roommate in US (a programmer) was working for a small company who sponsored his green card application. They had constant and large staff turnover but he couldn't leave (and was paid very little). By the time I lost touch with him he's been waiting for 4 years. I assume he got his green card eventually but I don't know how long it took in the end.
