Same as other areas of MTB.
Full sus jump bikes are a thing too
Hard tails are going to be faster because you can pump and lose less pedal power but suspension is more forgiving.
Big jumps need strong wrists if you have a rigid fork
MTBers must think BMXers are hard as nails. Or stupid.
It seems particularly silly on dirt jumps as the jumps are all into a sloped landing so there is very little impact force. To flat ground it makes more sense I suppose.
Same as other areas of MTB.
Full sus jump bikes are a thing too
Hard tails are going to be faster because you can pump and lose less pedal power but suspension is more forgiving.
Big jumps need strong wrists if you have a rigid fork