It had nothing to do with Gambit, nobody uses Whisper in Gambit.

I think they were expecting people to use it in gambit to burn the bosses though, I mean they needed it and MG damage which was completely unnecessary to say the least. Every nerf has left less for us to use. Ok, so something is "too strong" so we don't use other weapons, why would we use other weapons when they're trash? Most fusions aren't good in PvE, Jötunn is very strong in PvE and is an exception since it exotic, why would you use a fusion rifle for dps over a shotgun? Why use a sniper over a shotgun? Most fights are pretty close and there's ads everywhere flinching the hell out of you. All bungie are doing is enforcing limitations on the weaponry we can use. The weaker it gets, the closer to year 1 we get. Oh look, less heavy ammo for whisper and sleeper, sleeper isn't even close to the strength of whisper but why not nerf that too, do you want us to use rockets? Make them worth the slot. Want us to use snipers? Drop the flinch a bit. Nerfing everything isn't the answer. I'm aware they buffed things but why nerf things as well? Buffing something to replace what you're nerfing is strange to say the least, especially in PvE but PvP is a different story. It comes back to what Bungie themselves said too, they told us they don't wanna nerf stuff and would rather buff, then this happens. Would buffing things first then waiting to see what happens hurt? Not really. PvE isn't going to change much and PvP wouldn't at all, it's still the same old shotgun Luna's howl/NF meta as always.

Expected people to use it in Gambit? No it was a PvE nerf to a gun that has unlimited ammo if you can aim. The nerfs aren't even that big of a deal, the auto shotgun maybe but it still clears the encounters it was used most for effectively. You cannot keep buffing everything, power creep a big deal. They said they don't want to nerf but sometimes weapons will need brought in line.

They could and should have tried buffing, then waited to see what happens and go from there. Their first reaction is to nerf.

Power creep

You don't know that though. I'm not saying buff everything else to be more powerful, just buff other stuff so it's just as good. They could have buffed and waited to see what happened. You saying, "power creep" adds nothing to th conversation. Everyone know power creep can happen but would it have happened if Bungie hadn't just gone back to their basic instinct of, "nerf, nerf, nerf"? Who knows.

They didn't just nerf, they buffed a lot of stuff. There isn't on activity I played since the update that takes any longer to complete. Nightfall 10 minutes, boss 10 seconds. Heroics 8 minutes, bosses pretty much instant. Blind well tier 3 2 runs 20 minutes, boss phase about 2 minutes and another minute for the tier 4 boss. How fast do you want to kill stuff? Do you want to want through and everything despawns?

How fast do I want to kill stuff? I just want to be able to kill stuff with anything that I choose rather than what Bungie decide should be strong for 3-6 months before they -blam!- with it again.