… and every one of them destroys single source of truth for installed state. Most of them have no validation potential, and most of them are imperfect upgrades/downgrades.

If you don’t know why all that’s important, just remember why fired all our mentor types 20 years ago after the Y2K bust and so you had noone to teach you why. Mistakes like lennart’s Cancer didn’t grow in the light of rich knowledge sharing.