Review Detail of Daoist5dpydN in I Can Make Everything Level UP

Why do authors give their mc an OP ability but end up restricting the mc's progression with asinine reasons, like an OP ability should be used to its fullest potential and its fullest potential is fast growth!! The author keeps on giving reasons or rather excuses for the mcs slow growth and idiotic tendencies even though the guy is an adult, overall it's boring to read.