I’d argue he’s wrong. 30 days of some potential side effects from Clomid is better than potentially years of slowly recovering, if at all.
Decades of use by anabolic steroid users may not be the evidence he is looking for, but there is a plethora of evidence out there showing its success. There’s also a reason why a number of professional sportsman are failing drug tests due to clomid use.
I’d suggest digging out some research (there must be medical papers written on this topic) and going back for another visit. It could be contacting some US TRT clinics and ask if they have any information that they can share with you.