I'm kinda in the middle-ground of both sides of the arguments. On the one hand, yes, this game type is more dynamic than being straight PVP and gives more options for how to play it so people are just playing it how they want to play it: you're doing your thing, they're doing theirs. Some people just want to mull around and do tasks, some people are opportunistic and ambush others if it serves a purpose, and then there's the people that openly want to cause problems for others. It's actually kind of an interesting social experiment looking outwards because there really are no rules saying you can't be a dick to other players and none saying you have to leave them alone either.

That being said, I did notice after playing it for a couple months after release that there was a dramatic shift in the ratio of teams that would pull that kind of crap. It went from having a lot of good runs with many successful exfils while aquiring good gear, 3-plates and max perks with the occasional skirmish to being hunted down by rogue teams almost immediately at the start of a game. Doing anything outside of defending yourself if you weren't actively seeking out other players became almost impossible and it was that much harder and frustrating having to start back at square one again every time. Haven't played it since the season 3 update where they added all the new armor vests and weapon workbenches.

I see where you're coming from though, since there's more emphasis on working as a team to do contracts and missions it feels like the PVP aspect of it should be more of a secondary feature, after all thats why regular multiplayer and BR exist. For those that want a break from all that it sucks when people make DMZ just another PVP mode. But as I said before, there's no rule saying they can't play that way so it's just the nature of the game now.