Is that really true? I've had a lot of game aborts in 960 and never noticed the positions being the same, although it can take a while to get a new game. Do you always get the same color? Seems unlikely
Aborting in 960
The problem is there's no way to know why a player aborts. I think aborts in variants are common because it can take a while to get a game, so people might not be paying attention when the game starts, causing an abort for not moving. I like your idea though. If a player did abort strategically would you consider it cheating?
Again, people abort for lots of reasons. Sometimes you get paired with someone you've played before (or don't like) and you want to play someone else. Or, if they didn't realize the game had started at the timer ran out and aborted, they might see it and then start another game. I've seen it happen where a person't time will run out in a variant, causing an abort, and they'll immediately rematch and then play normally.
What if the player did that in a correspondence 960 game?
Generally speaking, on chess.com you can abort games before you make your first move for pretty much any reason. If you do it too much, you get penalized and lose rating. It seems pretty straightforward. But I was wondering about aborting games in chess960, when the positions are different each time. Shrewd players can abort games when their starting position is bad (particularly as black, when some positions are objectively lost on move 1) and play when their position is good, and potentially gain a competitive advantage by strategically aborting games. This seems unfair to me. I like live 960 and I've noticed a large number of game aborts (compared to normal chess) although I don't know exactly why this happens. Perhaps aborting games should always carry a penalty in 960