TwoSix
Everyone's literal second-favorite poster
If the DM engages with character rebuilding to mechanize a cleric's change in faith or perspective, then I don't think anyone has a problem.I think we actually see this pretty similarly. I absolutely do not see this as some sort of tool for the GM to bully the player playing their character "correctly." If we at the session zero roughly establish what the particular religion entails, I trust any player I would play with to begin with, to then take that into account in how they play their character. Like I said, the only real situation where I could see the power loss coning into play, is the player effectively intentionally choosing it by having their character to knowingly commit actions that would make them an apostate, and thus intentionally choosing subclass or even class change. Like if a wizard chose to burn their spellbook or something like that.
The problem is if the player has to play a cleric with no more spell slots.