Meh, some people are adamant that saying "gg" as the winner is impolite because it wasn't a good game if they won, therefore they're saying it sarcastically as a taunt.
People who complain about this stuff are too tightly wound. On sites where there's an option I disable chat. I think that's the most sensible. I don't play chess to chat. If someone does chat at me though, I don't care. On to the next game.
Is it just me or has anybody else noticed that on v3 nobody ever has the courtesy to say (text) "good game" or even gg anymore? Is it because "focus mode" doesn't support it or is it because people are using machines (engines) and think no human interaction is necessary? If you are going to beat me anyway, at least have some sportsmanship and say thanks. Sheesh.