If it helps you feel better about the carbon – i did the same to an lb carbon rim botching a hop over drainage ditch into a water bar (seems forcing the rear wheel bodily into a square edge with daft low pressure in the tyre isn’t good for it, who knew?) Ruined the tyre, (rim went clean through the tread of highroller) and I’m 99% certain the same impact would have written off an alloy rim and seen me walking to the car.
As it was, tube in, reinflated, and forgot about it by the time i got off the hill, and rode the rest of summer being no less cack-handed with only minor pressure loss to show for it (few psi a week). When i finally got round to replacing the rim it had four other splits in it -including one clean across the rim bed. In my honest opinion, not a chance an alloy rim would have still been round and holding air in the same situation.
In more direct regard to the op mind. Quite possible the rim was faulty, but that there is impact damage, possibly a tiny impact to a faulty rim but it’s not happened without the impact.