Dear Devs, How do I Remove 1st Person View from my game?

Doubtful, a feature that simply centers POV from a sims head and renders all walls and ceiling upon using it is unlikely to cause those issues much less corrupt a save, the culprit is something else. Of course, you cannot uninstall it, features are not like that, they are toggle-able.

If you use mods, do 50/50 if this happened after the patch. Look for LEs. Do a full reset of your Sims 4 folder. Run a new save and check.