When I’m picking a weapon to buy, I usually avoid weapons with tag specific bonuses, because I have no idea which enemies they refer to.
If there were some element of the interface (either an encyclopaedia or a popup tooltip with a description or picture of the enemy/enemies), I’d be able to understand what’s happening better.
For example, does “Bombers” refer to the suicide tox bombers, the firebomb throwers, or both? Which enemies classify as “Flak Armoured”?