What you're saying is correct in theory, but in practice this process happens through the scientific debate, which is done (if we like it or not) through scient

What you're saying is correct in theory, but in practice this process happens through the scientific debate, which is done (if we like it or not) through scientific publications and conferences. If you don't have a PhD you'll have a lot of trouble to participate on these scientific forums, because the community requires a minimum of proof that you're a serious researcher. This minimum requirement is nowadays a PhD in the area.