Number one, it takes time and practice to get good at anything, so being a wimp because you aren't on top in the first year is just... wimpy.

Second, there's this saying that went around the school I mostly trained at. "Hard fist is for kids, soft fist is for old timers". And it's true. Striking arts favor youth and resilience more than grappling arts. You start getting older, and you worry less about a knockout than you do about not being in pain after the sparring session is over lol.

Dude just wimped out instead of putting in the work or switching to something he could physically function at