You are entirely wrong.
The fact is that there are some graduate programs in Europe, and that there are professionals in the US and elsewhere who have spent years studying the phenomenon. Sadly, these are not the people you usually see on TV as <experts> because they are scholarly and not all that interested in self-promotion.
I was at UCLA when it still had a department of parapsychology with Thelma Moss. Unfortunately most of the US programs have lost funding and folded.
If you are serious, then you can pursue a graduate degree in some related field, such as anthropology, physics, sociology, psychology.... and then pursue further post-graduate training with the few professionals who have many years of experience in investigating in the field. It is also helpful to review the case studies and research that were done in the 19th century and early 20th century. I find the work of Nandor Fodor to be helpful for his very deep psychoanalytical approach to poltergeists and other dramatic psi as they relate to emotional conflicts.