Few myths in our society are as dangerous and as anti-social as the “self made man”. No one is self made and all achievements are the result of groups of people working together.
Certainly. But I can't think of anyone using an idiom like "just another cog, so don't try to do anything".
"Self-made man", "maverick", and various myths about lone geniuses and innovators without collaboration and supporters are heavily supported by (at least) American politicians and pundits.