Not really a stunt but a pretty common activity if you got a few hundered bucks. It requires the least instruction and participation for a skydiving activity.
It’s a little hard to compare disparate activities, but arguably skydiving is safer than riding a motorcycle. It is definitely safer than the general aviation and ultralight flying I used to do, when you do it with certified, professional sky dive instructors. Also, the tandem jump for novices has a very good safety record.
In other words, while there is some risk, it’s safer than most people assume.