D&D 5E Fighting Style Balance: Offense vs. Defense

[FrogReaver]

He does kind of have a point. Like, why am I as DM putting that enemy up against the player? You knock down an argument for offense on the basis of a scenario that some DMs might be unlikely to find compelling. His implication seems to be "Hang on a minute, that scenario doesn't represent what I am arguing for!"

or that example was the foundation of a broader one involving multiple enemies and multiple players. Goes both ways