That guy is a joke, Oda truly hates him lmao. You'd think that he'd be stronger considering he's one of the three marines - others being Coby and Garp, who has history with the strawhats, and he promised to take them down "someday". He trained for 2 years, learned Haki, and got promoted only to get shit on more and more. I mean of course i don't expect him to stomp his opponents since the new world is brutal, but he kept receiving so much humiliation that his entire existence is an irrelevant joke to most people now. Unless he makes a massive comeback one way or another, then it's truly over for him. But that would be hard to accomplish at this point without a major asspull