Bullet is chess but playing sloppy crazy moves because you both have 5 seconds isn’t really a demonstration of chess strength. It’s not really going to be helpful to you in tournament chess, except maybe for the times you fall into severe time control. But tournaments usually have an increment or 5 second delay anyway.
Bullet is fake chess.
It's not about playing the best move.... you win a bullet game by making 100 blunders and STILL WIN on time by being 1 second ahead of your opponent.
Well ... if your opponent is decent at chess, and you blunder too much, you'll simply get checkmated. And quickly ...