Talion does not automatically see the strengths and weaknesses of an enemy before he goes into a fight. Talion gains info on strengths and weaknesses in two different ways; the first is the standard fight them and figure it out from that, the second is to get into their head (or the head of someone who knows them) and read their minds. The reading the mind method requires physical contact, and it gives all the information on both strengths and weaknesses at once; [
[1]] go to 14:17, it is the first time he does it in the game and the most detailed example of what happens during his "interrogations". A player can expect to do this hundreds of times in a single playthrough, regularly in the middle of a fight.
Both Talion and Celebrimbor have mental trauma, but they use it as fuel to power themselves rather than get held back. Talion does get angry and murder the Hammer when he brings it up, but he was there to kill the Hammer anyway.
After Talion gets mind control it becomes his go-to strategy when uncertain or when in a hurry; friendlies going to be executed? Mind control. Graug not dead? Mind control. Need to rescue a prisoner from a heavily guarded fortress by yourself before they get tortured to death and there's no prep time? Mass mind control. Those are just in story missions. There are some side missions that are mind control based, and frankly after you get it unless the goal actually requires killing (or you're deliberately trying to avoid using it) then you spam mind control for everything. [
[2]] this is the mission he gets his mind control, the ability description shows him using the ranged version at 4:32, the maximum range is a little further than that clip shows (not much, so you can take the distance shown there as the maximum if you like).
On top of that, Talion is significantly faster than every single specimen and monster Spooky has available. With his dura and AP being easily higher than the whole list, only the haxed ones are going to have a chance of hurting him, if he doesn't just brand them all on sight.