The problem is that it’s still false. A lot of false science was developed by people honestly trying to find true causes. I also suspect that a good deal of actual science was developed by people who accepted a cause without enough evidence out of a desire to have a cause for everything and got lucky.
I don’t see that in the quote—it seems to be an attempted explanation for the existence of pseudoscience, not a heuristic for identifying such.
The problem is that it’s still false. A lot of false science was developed by people honestly trying to find true causes. I also suspect that a good deal of actual science was developed by people who accepted a cause without enough evidence out of a desire to have a cause for everything and got lucky.