This is a stupid, self-righteous thread. If you want to scold people who have bad attitudes, there are plenty of logical grounds to do it on.
1. This is a team game. If you're dominating your lane, you are obligated to take the lead, push objectives, and HELP OTHER LANES if possible (bot lane is almost an exception to this rule, but jungle, mid, and top should be following this general rule).
2. If you lose all other lanes but yours, you WILL lose the game. Especially if you consider jungle a lane.
3. Losing because of other people is frustrating, and it's okay to be frustrated. What's not okay is to stop criticizing yourself and starting to criticize others publicly. Some games, though, you're just not going to win.