Some big rail friends told me in the past that feebles are the easiest trick to do in big rails cus you can lock it and your body can stay crossed on the rail more easy to scape.
I hope he doing well because heads fracture can be danger even after recovery.
idk what your level of bs feeble is like - this is a trick that evaded me for like 20 years and i am getting pretty good at them now
I dont think its necessarily easier, but back feeble / fs smith slows you down quite a bit, like look at Kevin Bakkell 38 stair smith grind into the bank or whatever in his last thrasher interview / part from this summer. I think he would have been going really fast on 5050 and might have been scarier to hold especially towards the end at that insane speed. you feel a lot more locked in on the feeble grind and then it slows you down a bit too to kind of make it feel less scary.
USUALLY on feeble grind you slip to boardslide and fall backwards, but thats not what happened here... it seems like his front foot actually went off the heel side of the board completely, but he was trying to press down with his front foot on the wood, but then the wood wasnt there, so then he just shot forwards and front flipped down a 14 onto his dome ;( praying for Jah rn his PSL team is gonna be cooked now