If people want to PvP against like minded players thats fine, I like PvP games too. I dont worry about their K/D ratio in CoD. The game has reasonably strong skill based matchmaking anyway and we all start on a level playing field. The people who reverse boost so they can game tge system and get put into a low skill lobby just to noob bash are sad and ruining the game for others though, in my opinion.
There is an argument that we can somehow make PvP entirely optional and if we could, in the perfect world then cool, have at it. I just think at this point in the game its not really possible without impacting everyone else in one way or another and as the PvP player base is so small in this game I vote for the status quo, keep it to niche, instanced content. Improve it sure, expand it to servers or entire open world zones? Nah, not worth it.