Why does JP have to be the one to write the empirical papers? Why is that a prerequisite here? Judea Pearl is attempting to develop (or has developed) and evan

Why does JP have to be the one to write the empirical papers? Why is that a prerequisite here? Judea Pearl is attempting to develop (or has developed) and evangelize the approach for others to use it on empirical problems. So it seems the response is to be in favor of anyone (not just JP) to use it for empirical work. Do we expect every developer of a theory to put it into practice before it is found convincing? Shouldn't the reasoned explanation of a theory be sufficient for someone else to understand and attempt it?