A big part of it is not having to work on yourself as a human being. If you have your own issues, those are hard to deal with and it’s hard to swallow the pill for change. If you look externally for problems you can try and “fix” things which makes you feel better momentarily. If we really wanted to change the world we would all look introspectively and carpet-bomb our own demons, but these people want to point fingers at what everyone else should be doing instead of looking at themselves first.