Heh, there is a degree of that for sure. I think the thing to bear in mind with that is that the triggers just mean you can use your tech to take out thugs, so, if you need an explosive or whatever for specific enemies then that's where you find it.
Also, i dont know if its because im getting old but its another game that suffers from 'too many fucking buttons' syndrome. 'PRESS R1+R2+X+Y+BA+UP TO PUNCH'. If something I need to do in the middle of combat takes more than 2 button presses, im never going to use it.
Saying that, I started playing on my NG+ and had absolutely no recollection on how to take out some specific enemy types, it only really shows you once, still not really sure about opponents with shields.
It's worth jumping into the challenge rooms to get some of the button combos working for you. As with AA, I probably spent more time on the challenge rooms than the game itself!