You have absolutely no proof whatsoever to back up your claims against this man.
The burden of proof is upon him. There are ethical questions to be asked when he prioritises money and experimentation on the public over clinical data. He claims he has been regenerating hearing since 2014 and has never attended a single medical conference or even published a paper. He has never contributed anything to the field of science. How much money has he made with his treatment in the last 5 years though? And on what evidence?
Where would you say his priorities lie? He is also notoriously abrupt and mysterious whenever anybody asks him about the efficacy of his treatment. He avoids all probing questions and also avoids credit cards like the plague. All top class medical establishments in the world accept credit cards; only scammers and people who don't want disputes with a major creditor avoid them.