Helldivers fanbase has been making this argument but I don’t get it.

Yes, balancing still exists for PVE games, just with different goals. You want to encourage variety, intentionality, and engagement with multiple interesting systems. Games become dull if there’s a working first-order strategy.

I’d argue that could be true of firing a weapon from a vehicle too - it quite often trivializes certain encounters in GTA. Due to AI quirks, there have been times I’ve seen speedrunners get in a parked car to fight off enemies.