What measures does the police take to control villains with all sorts of quirks?
These villains were weakened badly and I'm pretty sure All For One was knocked out. They use highly cautious containment procedures. Nomu is controllable by Shigaraki so with Shigaraki not there, Nomu is useless without orders. All For One was weakened and he decided to let himself be taken away because he gave up. If I had to guess what would have happened to Overhaul if he still had arms is that they would use something where he can't touch anything and he would be fed by someone.