Because when i saw zombies respawn and coming out from the ground i felt its pointless killing them because they just keep coming (and repeatedly respawning) so i did the stealth as possible approach where just loot and focus on the bosses and also i don't like the rising difficulty
I definitely agree with it, I prefer the solution in the style of the first part, i.e. the incoming waves of opponents, after all, the constant crowd of opponents makes me unable to play normally, but I run in circles from a huge horde, you have to balance it somehow :)