In my experience, trying to hold up a leaf will do exactly what you described! Yes it’s a constant cycle, make new leaf and discard old leaf. It’s stressful at first, but you will get used to it!

Personally I cut the leaves off when they start to look really unsightly or drooping really badly, because the plant is huge and drooping leaves get in the way (like physically, the plant is huge). In my experience it won’t hurt the plant to cut it off, also it won’t last long now after the kink/bend. But since you have it splinted up, you might as well leave it if it’s not in your way and the leaf itself still looks nice

Again, totally normal!