I’d think the obvious benefit is that they’ll last forever like all hope products, you’d certainly get a better warranty than with Shimano…
My XT cranks have been on 4 bikes and are about 6 years old, and now need the bolts tightened right up so the plastic shim doesn’t move at all, and I’m sure they have a very slight “bend” in them (I can feel it when I ride other bikes – I say bend, but it’s more likely the splines wearing). The splines do look a little crushed, but I’d guess they’ll be ok for a few more years yet.
If hope have done it right, they have removed this issue at least. I’d still buy them over XTR to be honest, and we’ll have to see how much that RRP drops on CRC.