I heard in the past that Time Machine backups would inevitably become corrupt because of a fundamental defect. Pretty vague, I realize, but I wouldn't have used it anyway; I rely on Carbon Copy Cloner to back up only what's important.

test your backups. disaster recovery gamedays shouldn't be optional. you can spin up macos vms on your mac (or in qemu on linux if you want, or in docker, or rent a mac cloud vm) and test the backup restore.