That's the weird thing for me as well. Like unless crow is always wearing a helmet when he deals with the Scorn you'd think they would've knelt down and started worshiping the guy However it does seem news of crow being Uldren has been spreading across the Scorn, there's a wrathborn hunt dialogue that talks about a scorn raiding party heading your way and that they respect crow. He thinks it's because of spiders symbol, when in actuality...

oooooh i really hope bungie touches on this more. i really want to see fikrul and the rest of the scorn’s reaction to him.. i think it would be wild if there was a mission where we were fighting the scorn then crow shows up and next thing you know we’re standing in a room filled with kneeling scorn! yet again why we need a season of the scorn!