Did Koichi lose his potential?

I ask because several people have said he could be the equivalent of Pain in BNHA, but that because of his mother, he'll never reach his true potential.



I understand that Koichi's mother was afraid her son would use his Quirk uncontrollably, but if she knew his Quirk had lasting effects, WHY USE IT ON HIM SO MANY TIMES?! It's like giving a bird a chemical from a young age that prevents it from flying, because even if you stop giving it to it when it's an adult, it will still have side effects.