When people complain about APM in an RTS like StarCraft, they’re really not complaining about the spam clicking done by players at the pro level. They’re talking about multitasking which is an essential skill at all levels of the game.
Not even at the lowest rankings are you permitted to ignore what your opponent is doing and focus on building workers and base facilities. StarCraft is infamous for the ability of anyone to sacrifice their economy to perform an early rush attack (most infamously with a ton of early zerglings).
To combat early rush attacks you need to be able to multitask: send out early scouts to see what your opponent is doing, if they have any hidden building on the map, how many workers they have, etc. You need to be able to do this while building your own workers, base facilities, and units for defence. This is the multitasking that so many struggle with and it’s required to be able to play at the most basic level!
Optimally queueing SCVs and marines and supply depots requires an APM of 11 or so in the early stages of a Brood War game on the fastest setting. Add a couple more APM for scouting, and we'ree still not talking crazy levels of multitasking.
Dealing with your opponent is a fact of every strategy game!
And yet if you watch low level players they’ll be fine with that until a bunch of zerglings show up at their base and then they panic trying to micro marines and repair bunkers while their minerals shoot up to 1000 and then they have no units and lose.
Keeping a scouting SCV alive in your opponent’s base while building more SCVs at home, building more barracks, building supply depots, killing the enemy scouting worker, and actually reading and correctly interpreting what your opponent is doing is non-trivial.
Not even at the lowest rankings are you permitted to ignore what your opponent is doing and focus on building workers and base facilities. StarCraft is infamous for the ability of anyone to sacrifice their economy to perform an early rush attack (most infamously with a ton of early zerglings).
To combat early rush attacks you need to be able to multitask: send out early scouts to see what your opponent is doing, if they have any hidden building on the map, how many workers they have, etc. You need to be able to do this while building your own workers, base facilities, and units for defence. This is the multitasking that so many struggle with and it’s required to be able to play at the most basic level!