I think giving a monster TP by whacking it has gotten a far worse reputation than it deserves, possibly since it can be hard to separate from "being in range of TP moves" and most things of any challenge have brutal Area of Effect TP moves.

The most difficult monsters nowadays spew forth extreme Area-of-Effect spells and abilities like Paula Deen's kitchen spews forth butter-based comestibles, though, so the case against people unnecessarily engaging stuff still stands.