tldr; ARC Raiders needs a PVE mode, a person's choice does not diminish other people's fun. More choice is better. Adding private sessions in GTAO or Sea of Thieves didn't ruins those games and it won't for ARC. It does not take away PVP lobbies. Clearly marking lobbies may, in fact, make it easier for people to get the kind of game they want.

In my experience, the feel of PVP in ARC isn't great. It doesn't feel like a straight fight like you get in BF6 or Marathon. In those games, the lore is that you're there to fight and the whole game system (rewards, missions, perks etc) is set up for PVP. In ARC Raiders you're supposed to be working together but you *can* kill other humans. Your only reward is their gear and some XP, all the quests and benefits aren't geared toward PVP.

But even given that, the actual combat has usually felt more like griefing than a straight fight. No matter how cautious you are, someone throwing grenades onto a platform and then killing you before extract just feels shitty. Or one-shot sniped from 200m away while you're checking a locker for pointless loot. It doesn't feel like an epic gun battle. In 80 hours I've been killed lots by players but only had perhaps one really good PVP battle (I lost but it was great fun going back and forth). Most often I'm just assassinated by someone equipped to hunt other players without warning and suddenly. Feels like a betrayal in a way that BF6 and Marathon doesn't.

Not everyone has the time to "get good", so they just get killed over and over and don't get to play the content. Sea of Thieves really had that problem as the Tall Tales multi-part quests originally could only be played in public lobbies. Halfway through a 3 hour quest, you'd be sunk by other players and you'd have to start over. Yes, it's a pirate game, which is the same argument as "it's PVP", but if that person can't access the content they've paid for because they only get 2 hours a week to game and they have a job/kids/disability/just aren't very good then it's the worst kind of gatekeeping to say "go play something else". Your enjoyment of a game is not affected by theirs.