Have you heard of (or better yet - seen verified proof) of product shipping?

I had to file a dispute with my credit card company as the guy would not respond to multiple calls and emails.

Fwiw - in order for a scam to work - there have to be people who actually speak up on behalf of the scammers. Just look to the world of crypto (Hawk Tuah coin recently is a great example). A select few people absolutely get their product and stick up for the scammer as their experience is positive - however the vast majority do not - which is how the scammers profit.