Modding fighting styles is for difficulty (giving the player a less OP style) and also for some added style (some coolness you might say).
It's just something interesting. In GTA for example, a minigun is the strongest gun, but you still want to use a good ol' firework launcher, because it looks nice and is interesting.
It's sad sometimes that it seems a majority of modding is only on styles when there are so many other things people could do, such as missions or something with actual gameplay.
With the "drama", people create playable styles and that's great. Often, they don't want to release, which is entirely their choice and should be supported. It's nice of them to show it off for us to watch even if we can't play it, it's okay if they don't want to release. Attacking others for making a similar mod however is terrible, as the entire concept of "styles" is already defined by the game and by Rockstar games as they, the developers created the styles, not any modder. Therefor, nobody owns any rights to any specific style as they didn't even make the idea or any unique animations. They find animations/actions already in-game made by Rockstar and put them to use in their mods. So any recreation of the same mod isn't stealing, since you didn't own it to begin with as you made nothing new, but just made something already created and in-game a bit more usable.
If one makes a mission with a storyline they made up and is unique, or if someone makes a mod with unique gameplay not already found in the game, then they own the idea for the mission and a recreation of the idea without the author's consent would be stealing. This doesn't apply to styles, nor model selectors, as they have nothing new/unique/creative to them and could be made identical by several modders without seeing the other modder's versions. Styles are made up by Rockstar games and already in-game, so anyone can create them, and nobody can claim credit for any code already existent in the game that isn't new. Model selectors are nothing creative/unique and is a general useful idea, so multiple versions of a model selector (or any type of selecting mechanism for an in-game element, such as weapons) is not a unique idea that one can own, and anyone can make one without it being considered stealing. Finding the actions that make up a style is finding content already in-game as well, and no modder owns the actions at all just because they found it. It's all owned by Rockstar games, so any modder can use any type of action node they wish as no modder owns it. The only content modders own, is mods that are unique, such as a mission with a creative storyline.
