that's actually understandable that he doesn't want to potentially waste 15 (or in this case around 7 minutes) for a lost game, and even if by any miracle they win I hardly believe that it will be enjoyable for either of the 3 other solos to have to adjust to a cancerous playstyle. it's very disappointing to see that most people believe that some people should enjoy the game at the expense of others in a competitive environment and their excuse for it for the most part is that people should adapt.
still pretty dumb to leave before leaving spawn. so many times i get an off-meta hero on my team, either 1 of 2 things happen: the team tilts from the beginning and the game is lost at the character selection screen. or accept shitty picks and possibly win. symmetra might be terrible, but even in high ranks so many players just don't know how to react to it properly and feed