I'm saying it's a bad assumption (completely baseless) to say that someone plays speed chess and spends one or two seconds on each move when they have almost only played online (correspondence) games.
And it is also a bad assumption to think that someone who plays online chess exclusively always thinks carefully.
Yes, if he was rated 2500+ then it would be an plausible assumption, but not for a 1223.
Great, I didn't make that assumption.
My language was not only fine, it was exemplary. That's why I'm a professional at it. And you again show you didn't understand the guy you were arguing with.
It WOULD be a bad assumption to say somebody playing correspondence only is playing their moves swiftly. That's not what he said.