What we need to do is simply acknowledge that any new exotic we purcgase, unlock, or grind for is headed for one of three fates:
1. Mediocrity. It will be adequate or situational at best, junk at worst.
2. Overshadowing. For example, DARCI was a good sniper... but then came Whisper, and no one bothered with it.
3. Expiration. If a weapon is good, commonly used, and useful in lots of situations, Bungie will eventually nerf it.
Or number
4. Is completely balanced and people love using it, but Bungie being the bag of d*cks they are decide that fun guns are not okay. So they nerf it until it's not even the same exotic.