Glaives had already been nerfed hard, with roaring flames no longer boosting their melee damage, and now synthoceps barely providing any boost at all its caused a lot of backlash. Nobody thinks this nerf was warranted especially since the leading reason was the winterbite exotic glaive.
The payoff for risking being in close quarters with a glaive was doing high damage in short windows of time, before backing off or getting stomp one shot etc.
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Don't get me wrong, Bungie's clearly not very good at... well, making video games these days, but you can't be mad that Roaring Flames doesn't increase glaive damage. That obviously wasn't intended.