I might be misunderstanding Zachs powers but shouldn't the gains (power/skill) that MC makes be kept (in a logical/in universe sense)? iirc there is mention of memories shifting around or something like that when you get sent back to zach which kind of implies those things still happened? otherwise what would be being changed for MC as far as memories go? They aren't referenced the same way MC childhood memories are so they arent just being "hidden" from MCThat's kinda patched - MC will nope out of killing Jared on his second run, but that's still free +3 power and +3 skill from his first attempt. I don't want to count it though as that's clearly a bug.
Getting the boost an unlimited amount times make sense to patch out because it makes power and skill "worthless" but i feel like (from a narrative/in universe perspective) doing a single loop and getting the boost both times (or getting boost once and money the other) is less of a "bug" than the method we are currently using to train with mommy which relies on us having specific powers, as well as our mom having those same powers all while MC is under the effects of a different power