Do you go preach about sales being predatory in shops as well? Are you going to claim FOMO because you weren't able to buy something at a lower price than normal? Or are you just not able to accept that stores have offers? Where's your complaint about the discounts on services? That is FOMO inducing too, what about concerts?
Are discounts predatory practices too? Are events predatory practices too?
And no, I'm not going to remove my signature, how much you might kick and scream, if you have a FOMO problem, seek help, talk to someone, there are specialists in the field.
I could understand your foaming around the mouth if it was limited items, but it ain't, I said 10 sets of gear, the same ones, every Christmas. But you most likely didn't read that.