What is your opinion on rematches?

I played someone in bullet, he lost all his pieces, was slow at moving, really slow, they got mated, very poor player with an elo of 200 that is what you can expect. I gave him a rematch, played like a 1300+, no blunders, super quick this time. I looked at his record not a good one.
I am now convinced 100% you can cheat at bullet. I don't care about chess anymore. Playing online is meaningless.
I never give anyone a rematch now.

I just played and beat an 899 member in 5 minute blitz, who asked for a rematch. Their rapid rating is 1225 at the time of our game. That's why I don't do rematches. He/she has 326 rating difference between blitz and rapid. That is significant at my level of play.

For me, rematches come from two types of people:
1. Someone who is mad because they got slaughtered after playing an objectively bad opening (usually the wayward queen attack) .
2. Someone who slaughtered you and thinks you're free elo.

I played someone in bullet, he lost all his pieces, was slow at moving, really slow, they got mated, very poor player with an elo of 200 that is what you can expect. I gave him a rematch, played like a 1300+, no blunders, super quick this time. I looked at his record not a good one.
I am now convinced 100% you can cheat at bullet. I don't care about chess anymore. Playing online is meaningless.
I never give anyone a rematch now.
Obviously it's impossible to know for sure, but I think there's a very strong chance this wasn't cheating. Lots of people who play bullet are quite decent players who just struggle with the time control (it's pretty common to see players with bullet ratings several hundred points below their rapid), which means that starting from quite a low level people are capable of playing at 90% accuracy, but struggle to do it consistently under the time pressure. So you see an awful lot more variance in performance in bullet - sometimes you get a position you're comfortable with and can assess accurately at speed, and sometimes you don't. What changes as your rating climbs is not so much the level of performance people can produce at their best, but how consistently they play at or near that level.

2. Not all tournaments are single elimination. In fact, the majority of them are not single elimination. Most tournaments are Swiss-system, meaning even if you lose, you can still earn enough points that you might face the person who beat you again within the same tournament.
That's not how Swiss pairings work.
I've played in hundreds of local tournaments and at least two FIDE-rated ones, both at the National level... and I've NEVER played in a Swiss-pairings tournament that allowed that.
The problem is ego.
If you allow your ego to get tangled up with your chess, then of course you'll get into a snarl and start confusing your injured ego with "poor sportsmanship by the opponent".
Try to keep your ego separate from your chess.
I use a rubber band.

Bullet is a crazy game. I can't see how anyone could cheat when they only have a minute for the whole game. My bullet rating is something like 600 points lower than my daily rating, lmao, but I don't play bullet often enough to get used to the fast pace.
Obviously it's impossible to know for sure, but I think there's a very strong chance this wasn't cheating. Lots of people who play bullet are quite decent players who just struggle with the time control (it's pretty common to see players with bullet ratings several hundred points below their rapid), which means that starting from quite a low level people are capable of playing at 90% accuracy, but struggle to do it consistently under the time pressure. So you see an awful lot more variance in performance in bullet - sometimes you get a position you're comfortable with and can assess accurately at speed, and sometimes you don't. What changes as your rating climbs is not so much the level of performance people can produce at their best, but how consistently they play at or near that level.
This is nonsense, he was blundering all his pieces in the first game, just like a beginner, the next game he dominates it. Get real, they clearly cheated.