Only A & X Touch buttons should act as clicking
Clicking/selecting with triggers is inaccurate: as you pull a trigger, the aim shifts, causing irritating miss-clicks.
You could think it as a shooting with an imaginary gun. You point with your index finger and then click with thumb to activate (shoot).
The current setup allows you to either click with the buttons or triggers, but that is not consistent and may encourage the more inaccurate method for new users.
I don't agree. You've already mentioned that you can click with either. I personally prefer triggers, and I'd rather not have this functionality taken away.