He's successful, and as you said he made knives for lot of members of millitary and/or special forces. He has high prices and lots of people are willing to pay that much for his knives.
All that has my respect.
Without a doubt, he knows a lot about knives and business, and I am willing to bet his knives are very high quality.
What I don't like about him is that he talks highly about steels he uses (like 440) while talking down other steels he doesn't use, and calls every non stainless steel non food safe.
https://www.jayfisher.com/Blades.htm#CPM_3V
For example, to say this about 3V.
https://www.jayfisher.com/Blades.htm#Plain_carbon_standard_steels
And to say this about plain carbon steels. He said they are not food contact safe.
Many professional chefs use carbon steel knives, even Japanese sushi masters, and they are known to be extremley picky about their knives.
Also, people used that same carbon steel for ages and ages... stainless steel is pretty new actually.