When serious professionals try to work together and it doesn't work out, someone is asked to leave, and they do. They get to play it off as a reason other than performance. Egos and careers remain undamaged, and everyone can move on.
Adult Day Care centers have very low bars to clear, and most roles could be performed by basically anyone. Firing someone requires a lot of pomp and circumstance in order to seem fair. After all, everyone else is barely doing anything, and they will get to keep their jobs.
If you get put on a PIP, you know what game you're playing, and you absolutely should not quit. Make them fire you, and collect unemployment. Then move on to the next host.