I dislike specific weapon styles. Actually let me clarify. I like crunching them and using them to come up with interesting builds and trying to figure out which is better and being pleasantly surprised when I realize one I discounted is useful for something. But while I like them for character building I dislike them in play, in character concept etc. Once you include styles and choose one then you have suddenly declared that your fighter can only ever excel at one style. I like fighters that can excel with a broader range of weapons and so I dislike weapon based styles.
I understand that, but what exists in the PHB isn't describing fighter than can excel with a broader range of weapons, it's describing a fighter that can use a bunch of identical weapons equally well. If you're a fighter with dueling Style, then you're using a weapon that deals 1d8+2+your stat damage, or you're playing suboptimally. Sure, you can hit a monster equally as effectively wielding a Battleaxe, Flail, Longsword, Morningstar, Rapier, or War Pick, but since there's no difference between any of them, you're effectively still using the same weapon. What's the good at excelling with the use of seven different weapons if none of them are any different from one another?