Curious to hear what specific gun it was?
I don't remember. I found the post where I ranted about it, but I didn't mention the specific gun there either. It was whatever the crucible weapon was before the mountaintop took its place. Here's the post where I first complained:
New pinnacle weapons have been announced for the upcoming season, and I think they're having the averse effect of pushing me away from the game. Seasons in general are making me rethink my time with Destiny.
After playing loads of PVP (close to more than I wanted to, really) I still have a lot more progress to accomplish before I'd unlock the current pinnacle crucible weapon. I didn't realize it when I started the quest, but I essentially only had three months to "prestige" five times in Destiny 2 PVP. That is, reset my rank and start from the beginning, and do that five times. Now all that progress is about to be taken from me, and I think I'm just done.
Destiny is a fine hobby, but it's a bit more demanding than I want from a product that I paid for. I completed so many other quest steps, and now it's all just going to be gone because I wanted to play Red Dead Redemption 2 and Black Ops 4. Meanwhile, there are other games I'd like to play as well, and it downright angers me that I can't just play Destiny 2 when I want to play it, and reach every goal at my own pace.
That the rewards associated with seasonal quests are some of the most effective weapons in the game sours me on the experience even more. I'm done, and I'll remember this when Destiny 3 launches, if they continue this nonsense of resetting your progress for certain goals because you dare want to play other games.
That was years ago, and I still haven't touched the game since. Between seasonal garbage and "sunsetting" content that you paid for, they lost a fair bit of money from all the expansions I would have likely bought if it wasn't for this crap. I'm glad they finally committed to stop vaulting content, but if I still can't get anything in the game at my own pace, I'm still never coming back.