No, it becomes a nuissance, just like the "micromanagement" in total annihilation kingdoms, where 90% of time you are spending moving your scout birds to spot enemy encampments to be able to attack them before they attack you. To stop about ranting about TAK, in this case, if you are currently busy in other place, it can basically ruin your army. After all, you don't micro only your current army, but also the economy, building workers and troops, assigning workers to resources, building buildings, scounting and so on, ... so saying it encourages micromanagement it's more an excuse, like blizzard did with its 12 unit selection in warcraft 3, they tried to explain that this way isn't too easy, but the truth is they were just too lazy to implement large amount of units selected at the same time, in 2002 most of RTS game had almost unlimited unit selection. Anyway, it can get very frustrating when having tons of units, especially if archmages are in the army, so you must pull your melee back all the time, so you they won't get hit by their splash.