Not to mention external monitors are broken on my M1 Pro MacBook since some Sequoia 15.x update. Upgrading to Tahoe now to see if it will fix it but I'm not optimistic.

Fucking inexcusable that MacOS metal support for external monitors has been finicky and unstable since the very beginning, and they never resolved that (but at least external monitors were DETECTED, then somewhere in Sequoia things went completely south)-- and now it just seems to be completely broken. There are countless Reddit threads. Why can't the Apple engineering braintrust figure this out??