If something in my life becomes unbearably distressing and I force myself to withdraw and stop reacting and instead to recollect myself — the explicit output of this work is rarely “What you understood as bad is actually acceptable.” It is more often “It is acceptable that this bad thing is bad.”
This is similar in form to how my philosophical reconceptions work. The explicit output of philosophical work is rarely “I was wrong,” It is more often “I was right, but not right enough.”
I am unfairly skeptical of anything claiming to be metanoia that is just a reversal of a value. Something bad became good, or good became bad. Something false became truth, or truth became false.
Many people who have changed opinions on this or that deep or important topic believe they’ve experienced metanoia… and but actual metanoia can give them something to which they can contrast their simple changes of opinion. But generally, they use this leveling-down move of treating all exciting changes of opinion as equivalent to protect them from any line of thought that could induce actual metanoia.