A few thoughts -
Met Dean a few times in the Valley - a crazy mofo but personable, knowledgeable, intelligent, sarcastic, and just an intense individual...liked him immediately.
As long as wing suits are legal to purchase, and high walls are accessible, you are going to continue to see such activity. As long as the public continues to fixate on such extreme athletes and their adventures - free climbing (no pro), hang gliding, base jumping, free-fall steerable parachutes...as long as sponsors continue to lay out big bucks... all interesting exploits, publicly lauded as being "best of the best" athletes, using/ appearing prominently on such social media venues such as Adventure mags, Facebook, TV documentaries, etc, these flights of fancy in Yosemite will continue - someone will always be out there, pushing the envelope.
Instead of making things more difficult for these wing suit dare-devils, (forcing them to fly in failing light conditions - stealth - twilight) - instead, sanction the events - test/rank them as expert-capable, proven, make those who intend such feats pre-qualify before attempting to fly anything, and additionally all these wild individuals also should be forced to buy some sort of yearly insurance policy (high risk policy?) covering possible body recovery. Much like the hang glider Yosemite ranger who oversees all flights off Glacier Point - a thorough inspection process/ logs checked/ proficiency measured - make things hard but possible - legalize (and maybe even promote) these attempts. Much like today's climbers free soloing 5.14 routes and then becoming famous, appearing on TV afterwards...Yosemite has always been the mecca for big wall adventure...well-advertised as such, movies shown daily, gear sold, classes taught. Suggest being pragmatic not hypocritical on what is allowed.
There is no way of actually knowing, but doubtful there was any death wish here - just a wildman athlete searching for adrenalin...RIP.
Mountainman who swims with trout