The problem with this whole line of thought is that, in reality, conspiracies abound. History is full of conspiracies.

The idea that all things are all just emergent phenomena created by laws and economics, that no groups of humans are trying to manipulate things, everybody is incompetent, and nobody is responsible for anything is absurd. It conflicts with reality.

In reality, everyone is engaged in conspiracies. Everyone is trying to manipulate things in some way, and some groups of people have far more influence than others. That's what it means to have power and influence.

It is true that people that are really into conspiracy theories often believe things on far too little evidence. However, that doesn't mean that conspiracies don't exist, or that they are not important.