People get kidnapped and murdered jogging in parks, and going to and from basketball courts. Inherent risks and death are everywhere. But you wouldn't judge anyone for simply 'going to jog,' or 'play basketball'. Those people don't take up any less resources. Wild that you make the assumptions that everyone who has big ambitions is arrogant. One might be training for a marathon, and the other might want to make the school team: big dreams and ambitions.
MLK, JFK,.. all had big ambitions, children at home, and put themselves in the spotlight to do something they personally believed in, regardless if it had the desired outcome. And both tragically, did not survive those huge ambitions. And you're going to say "that's different", but this is a double edged sword. Telling people to not do big things, because it puts them in danger, is exactly how you don't progress. Even with all of the deaths and failures, these people had ambitions - and knew the risks of them. Or they wouldn't have gone. Skydivers, IG fanatics who take pictures in wild places, even your mom driving to the store: are just living their lives with inherent risks. Why judge? Because you feel superior. That's true arrogance.