This guy is a dazzler. Of the 5394 BULLET games from "ProteusSF" account, only 341 games were played against opponents with Elo over >2800.
Of the 341 games, there were 60 wins, of which ProteusSF losed 53. His rating is based on farming and it's no surprise that he doesn't want to play against strong opponents.
Against weak opponent admete_bot, ProteusSF played 3077 of his 5394 games:
admete_bot is a weak program with an Elo of around 2400. I have stopped playing against such opponents otherwise I would be ashamed. ProteusSF is of course not ashamed, he would also play 100.000 games against such opponents if he could gain another 100 Elo. Maybe he'll do that at some point. He will never want to play against opponents like me. Other people (including here in the forum) have also reported to me that ProteusSF doesn't accept any challenges against them because they are too strong for him. ProteusSF only requires sacrifices for its Elo rating.
Proof, all bullet games from ProteusSF in PGN sorted by date:
https://pixeldrain.com/u/VFVdxAUR