It's probably a Saitama situation where he is constantly improving but instead of improving by existing It's that everytime he dies he surpasses his limits. Like a leveling cap in video games.
He was initially just average at best before his first regression and he had to develop a stronger battle sense after dying a hundred times, so everything that comes naturally to ppl with talent, he needs to gain with experience by dying.
I thought it maybe that and I think in the way he didn't reach the limit bc there hasn't been a wall he shouldn't break so Ig he didn't in a way
he probably has insane will, and is insanely skilled, but that doesn’t change that he’s talentless. he probably is super talented compared to an average person by this point, but he’s being measured to the standard of his crew, which is composed of a barabarian, fairy, shadow ninja sasuke archetype, an exommunicated priest with divine power, a mage, etc. the people who are calling him talentless would probably see even the most successful and hardworking people, as cannon fodder.
But didn't Encrid pass his limits long ago? Like he only got better bc he really trained hard and bc he regresses. He has passed i think few years of training with his regression maybe even his whole life span. So It should be easy for him to become a knight, like they said he has more will than anyone and he passed his own limits long ago
On other point what sachsen did is a such a fanfic moment, sachsen in fanfics I read done that