Hrqls: dice games require less thinking .. therefore its easier to make a quick move in those games and more of those games can be played at once

If your opponent is online, yes. But I think most of the "duration" of a game, the game doesn't move forward because the player whose move it is isn't online, or hasn't selected the game yet. Many games last weeks or months - I doubt most of that time one of the player is actively studying the position. Even if both players spend 24 hours in total actively contemplating their next move, that's less than 10% total time if the game lasts a month.