When did climbing to the top of a very tall structure, then BASE jumping off of it, become no longer enough?

I wonder if people always did crazy stuff like this, and there was just no such thing as a GoPro to record it, so we never got to see it. In any case, now that the diminutive camera has changed the way we're able to view spectacles, by providing previously impossible-to-record POV's, it seems folks are upping the ante and creating feats outside the realm of normal extreme sports competitions or run-of-the-mill thrill seeking.

Hence BASE jumper Erik Roner hops into a lawnchair, letting a crew rig it up with 90 weather balloons that carry him to a height of 8,000 feet. Then he starts shooting the balloons out with a shotgun: