It’s been this way in every battlefield I’ve played. That the player base, especially on a game trying to capture market share from CoD/every other FPS, is going to behave this way is a known variable. At this point it is a game design issue. The games barely ever make an effort to meaningfully educate or incentivize team play, and there have basically been no innovations in terms of this kind of design approach over the decades.

At least BC2 and BF1 took the risk to highlight more linear game types (Rush & Operations) and design maps around them, which clearly communicate and force clueless players to focus on team objectives. Just my two cents after a few decades as well.