I'm saying that if an SEO guy who resells third-party software is complaining that Google is cutting them out of the deal, the SEO guy is a hypocrite.
I don't understand why you think he's an SEO guy? Is he scraping content to build his marketplace without seller consent? Would Etsy be an SEO guy in your mind?
Yes he is an SEO guy, no that doesn't mean you don't have consent for content you are listing. Yes, Etsy is built on the back of SEO, as well as Pinterest and many others.