Complex sentence: The opinion that the specialized study about the problem "does not support the material clearly and directly" is not very rational (sorry), your trial to exlude all such studies is not reasonable and has no support in wikipedia rules.
Split into simpler sentences: The opinion that the specialized study about the problem "does not support the material clearly and directly" is not very rational (sorry). Your trial to exlude all such studies is not reasonable and has no support in wikipedia rules.