Aggression wins in poker. That is why TAG and LAG are considered playing styles but there is no "passive " playing style. If you are limping, calling a lot, and making minimum bets, it does catch up with you. You certainly aren't winning. Strong players are going to exploit this.
When you see players limping on 4-5 hands an orbit you just need to bet your hands. The math will take care of them, but you really need to use caution.
LAG is a style because if you have AK the villain is 40/60. Pretty close to a coin flip. While you could feel "i finally got him" you do run the risk of running into things like a weak 2 pair, low flush, or odd straight.
It certainly is always better to play your normal game and normal betting lines you have success with rather than change when facing one certain player.
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