I also lost the use of my Touch ID and Bluetooth mouse (vertical scroll stopped working first, then all of it) directly after the Monterey install. (which took longer than most installs) For the Touch ID, at first it worked when I depressed the button, then I tried to add another finger's print, now it doesn't work at all. For the mouse, at first, when I turned my mouse off and then back on it worked again, but then it failed again and now won't even pair. (I charged it, turned it on and off several times.) My mac, keyboard, and mouse are brand new. Mahalo in advance for figuring a solution!