Is this player legit?

So my friend's friend is telling me that his hardest was limbo back when it was top 12. When i asked about any proof about this feat he just said that he doesn't have any recordings whatsoever. I asked him about his Pointercrate account and he said that he doesn't have one because he only plays geometry dash casually. I asked what his GD username was so I could search it up later but he said that he forgot his username and that he forgot to save his account progress even though he started playing it back in 2018. Is he a larper(fraud) or just a really private guy? Recommend me any questions to ask him later.