I never rate anyone. With no definitions of any objective meaning the exercise is pointless and a waste of time. I use that time to click on a new game. But then I'm a bullet player so ymmv and so does what one finds "fun". If you find it "fun" to rate your opponents, well, that's nice then for you.
Ideally, it would be nice to have settings we could use that would turn off any extraneous things we, as members of the site, aren't interested in.
Like, you know, the up thumb/ down thumb.
I am the type of chess.com player that never accept a rematch. I prefer different opponents in each and every game. Am I prone of getting a lot to "bad sport" score?
I don’t know the answer to your question because everyone is different however I wouldn’t give you a thumbs down simply because you didn’t want a rematch. I rate people based on how they play and their attitude towards the game; it’s their choice if they want a rematch or not.