Are you sure it’s not user error that’s lead to them cracking?
Did you get all the spacers correct to prevent excessive force? See previous thread for details.
Upload a picture of your bottom bracket.
Personally I’d sell them and pick up some 2nd hand xtr cranks instead but if the hope cranks are installed correctly, there’s no reason for them to crack.
Spacers are correct, as per the guide it calls for a single 2.5mm spacer on the drive side for 73mm shells (Bronson V2). Always refitted with care after a clean using a quality torque wrench. I added a picture of the damage to the end of that thread, pretty lucky it missed my leg as my foot slipped.
Seems to be a theme with the Shimano recommendations, which is steering me away from Sram Dub. I think the choice will come down to chainring options available on the Shimano XT M8000 Boost or XTR M9120 spiderless looks like the XTR is 12 speed only, so back to the drawing board for 1×11.