Well, once you get comphy with keybinding you will see an increase in whatever skill you have. If you are a long time clicker, of course it won't be comphy at first, just like anything you have to get used to it.
OR you could get over it and realize that in this game there's no reason to try to force a keybinding mentality on the population as a whole. Which is exactly what you're attempting to do here. I know plenty of folks who do fantastically by being clickers, to the point where they are successfully clearing everything. They don't PvP, so that whole business is irrelevant.
If you've got certain folks you know who are clickers and are suboptimally performing, maybe speak to them directly.