its a PvE game and it gives you the option to play with or without other people, if it wasn't a pve game you would be able to own parts of the environment. but you cant, you can only influence the environment, you saying "hijacked by players wanting PVE any chance they get" is strange because its a PVE game already, the only choice you have in this game is, do you play it with other players or not.
Its also a PvP game, clearly designed around the good and the bad guy. The PvE action is not challenging at all. Dumb NPCs that cant even chase you down, where is the fun?
And the game was clearly designed as a multiplayer game because the whole open world interacts with multiplayer - you can play solo, but people who play in other modes will change your world. This alone is enough to play in open, find groups and enjoy the multiplayer with them and against them.
I would already stopped playing without a multiplayer part where i can have some fun. And most people see this just like me.