The game is currently entering into a nerf spiral.
They've nerfed the double barrel shotgun (the only shot gun you can reliably aquire from raid to raid) into being absolutely useless. This was the counter to Melee, and then Melee became unstoppable. They then nerfed Melee into the dirt.
The meta shifted towards being entirely a ranged game. There is no point in pushing and closing the gap if you are just going to eat lead and die. Ranged combat is not nearly as deadly as it is in Tarkov, if you start to die you can just dip into cover and heal back to full in a few seconds. The way to counter this is through grenades. Grenade spam is now the current meta, people now just fill their back packs with grenades. Bungie is currently looking to nerf Grenades into the dirt.
Once you can no longer kill people with a combination of grenades and automatic fire, I'm pretty sure the next meta is going to be Rail guns and sniper rifles. Weapons that can Down players or dispatch them in a couple of shots.
In an attempt to appease casuals they are running off the people who actually want to play this game for it's pvp.