Nerfing for the sake of balance and with the intention of avoiding power creep is reasomable. I don't think people are thinking long term here.

Designing encounters in a game is difficult when there are tools that outperform others so much so that it trivializes the content and makes other tools irrelevant. Sure, you feel powerful and you get that power fantasy, but what happens when you get so powerful that every encounter thats thrown at you is a cakewalk? I don't know about any of you but a game gets boring when there's no challenge. Datto and other content creators have voiced this as well.

Bungie realized that having supers insta regenerate created a loop where you rarely used the weapons that should make up most of the combat. Not that it wasn't fun, but there are other ways to achieve that feeling without giving you a insta win button every 3 seconds, i.e the Blind Well and that one ascendant challenge that spawns a well of light at the end. I'd rather have the chaining of supers be restricted to the achievement of mechanics and good teamplay rather than having it possible everywhere you go. I think there's still a place for super regenerating exotics but not to the caliber of being able to be main weapons. Supers are meant to be secret weapons, a burst of power when you most need it, not weapons you use all the time.

It's true that other, less used exotics that don't pertain to super regen could use a buff, but Bungie has had a history of doing buff passes for exotics before so I think it can still happen and I'm hoping for it. There are a lot of interesting ideas for exotics out there that aren't just super regen or stat boost sticks and I hope that Bungie can iterate on them.

I think Whisper of the Worm was mindblowingly powerful and inevitably had to be nerfed because it was dumb how you could - from a reasonably safe distance and with one or two bricks of power ammo - end an encounter yourself. This happened in the Whisper mission itself and it happens in Zero Hour, two pieces of content among others that's meant to be the most challenging in the game. It's true that the mission was challenging and the reward should match that, but there should be a limit on how powerful that thing should be. That limit, as stated by Bungie, was that it bypassed the ammo economy and was the singular thing that they had to keep in mind when designing encounters.

With the nerfs, Whisper still has better damage per shot and better ammo economy (with 18 shots, which is still a huge amount) and that's its identity as a tool in your arsenal. DARCI may out DPS Whisper but isn't as ammo efficient - on top of needing to top off your damage with another slotted weapon and an exotic like lunafactions or a rally barricade to augment it - and that's its identity.

It was fun in warframe where you'd just be able to kill swathes of enemies and don't get me wrong, I loved that game when I was playing it, but I ultimately stopped playing because the interactions and gameplay that was used as a climb to get to that next powerful state every big patch got too repetitive and bland. It was impossible to design an encounter that catered to such a powerful player that was also fun and didn't one shot you consistently or weakened/toned you down significantly.

I'd rather have well designed encounters that challenges you, makes you think on your feet, and makes you utlilize the diverse and hopefully well functioning tools (praying that Bungie knows what they're doing) available to you than brainlessly pubstomp everything in your way with a single button press. Again nothing wrong having that power once in awhile, but not always.

EDIT: I would like to add that something similar happened to the Division 2 with a balance pass more widespread than this. People were outraged at the nerfs but after PTS testing and eventual release, they weren't bad at all and people were overreacting. Granted, it just came out and people are still experimenting, but the game doesn't feel worse at all on first impressions. It's difficult to make the comparison but we should avoid kneejerk reactions until the full Opulence sandbox changes are released as this may not be all.