A dev on the destiny 2 team reddit account explained on the back end what the issue was with the weapon, it was a bug in its interaction with anti barrier scout. Was it overpowered yes it did more damage per shot than a machine gun and that was without the damage buff on marked targets. The gun made no sense. But at the same time with all the bugs in the game right now that actually do hurt the player experience, its a kick in the nuts to take it away now instead of just leaving it alone for a bit. Bungie sitting there in their studio theater watching the raid race all weekend seeing clear as day as what is supposed to be a peak community event was completely compromised by game breaking memory leak bugs forcing teams to constantly reload their instances to avoid the game genuinely crumbling apart in real time, then starting the following week with fixing third iteration and disabling encore again was certainly a choice in priorities. I know thats not how game development works and some things are easier to fix than others but its the principle of bugs that benefit the player consistently being addressed before bugs that hurt them.