The fast and coordinated clicking stuff is only the first part of learning SC (II). Strategy comes after that.
To (not literally) quote
Sean 'day[9]' Plott: If you are interested in american football and want to play various tactics on the playfield, you first need to train your body. I.E. if you are a scrawny guy, with no muscles and stamina whatsoever, you can think about football tactics all you want, but you simply won't be able to execute them for lack of the basic requirements.
Same goes for SC (II) and every (balanced) RTS in general. The *real* strategy part only comes into play, after the player mastered the basic mechanics of gameplay.