This is a lesson on how to lie your way to success. Which is an option, but any idiot with no morals can do that. Of course, large companies do this all the time with no repercussions, so I get why he went this route.
Honestly, I don't really have a problem with it. A more honest approach would be ideal, but if I had to choose between doing that and bootstrapping an entire business with stock before getting my first sale I would choose the "dishonest" method. It's a little inconvenient for the user, but presumably they want the product, so in the end they just end up waiting a bit for it.
People don't want to help you test your idea, so presenting it in any other way without rewarding them is unlikely to result in sales.
It's still a lie though like almost all of his ways of getting a customer. But I find it refreshing how clear it is.
Advertisers mostly pretend they are not lying which shapes wrong impression that advertisement can be honest. No, it can't if it is to be successful. Honest advertisement is just information and that's almost worthless for a seller.
What an idiot with no morals can do is lie. Getting to success is harder.