lfsforums have not been educated on the drift scene that much - it's a club, meaning as a driver you can be in multiple clubs unlike regarding teams where you can be only representing one. Clubs are sort of for just having fun (and damn some of them have the sexiest skins out there).
They have been around for quite a long while, there's no point in creating a team in the lfsdrift scene when you already got so many of them. Some people want to be representing something together and they obviously do not want to just dump their own team - that's where being a member of a club comes into play (same principle in RL drifting).