Did you just ignore the Smallville scene where his shield from his suit is destroyed and he can’t handle it so the other Kryptonians have to drag him to the ship? He later adapts due to his genetic he was bread to be a warrior. This also is something he struggles with & he…
Then goes on to immediately get all the powers equivalent to superman, suffers no pain, has to make no effort for it, proving himself as dumb as the writing