It's not any scarier than jumping on skis
I think it might even be easier, I've seen lots of newish bikers pick up jumping small jumps pretty quickly, where as the same cannot be said of new skiers picking up park jumps. Dirt jumps are a lot smaller than ski jumps and the smaller lines are table tops so you can roll them or case them and it's completely fine. The green lines are usually only like a couple feet, so very simple to ease into. You have to be really active on dirt jumps though, I'm still learning to pop correctly. To pop on a bike you really have to do an ollie. If you don't unweight the front end and pop from the rear tire then you tend to nose dive. I still land nose heavy sometimes, but you just roll it out assuming you aren't hitting anything huge and don't accidentally grab the brakes.
As a skier you'll have a huge advantage in that you'll instinctively use your legs and not your arms. A lot of new bikers try to jump by yanking with their arms and that's a huge no-no, it's a good way to crash. If you just pretend like you're skiing you'll have a huge leg up on most the other people learning to jump. Definitely get some knee pads though, and maybe some shin pads too, you will slip some pedals and those things are sharp. Pedal carnage:
https://imgur.com/a/S2r77il
