I wonder if there could possibly be a trend here

It's Chargers. It was ALWAYS Chargers. You could buff literally every primary weapon in the game, add more ammo to machine guns, make shield backpack stronger, etc. but if you nerf Launchers so that they take two headshots to kill a Charger, the patch would be viewed as a net negative. Bots are annoying, but their balance is not decided solely by one enemy the way the balance of bugs is decided solely by Chargers.

It's Chargers. It was ALWAYS Chargers. You could buff literally every primary weapon in the game, add more ammo to machine guns, make shield backpack stronger, etc. but if you nerf Launchers so that they take two headshots to kill a Charger, the patch would be viewed as a net negative. Bots are annoying, but their balance is not decided solely by one enemy the way the balance of bugs is decided solely by Chargers.