I think what he's getting at here is people asking him about building an alternative platform to Reddit - much like Lemmy, Kbin, Tildes, etc. are - as opposed to an app serving as the frontend for an existing alternative platform. I've seen poeple buzzing about that on some of those threads about Apollo on Reddit. Those people are so in denial, and there were so many of them, that I couldn't conjure to effort to point how ridiculous that idea is. Some people did, and were quickly shut down with the usual complaints (fediverse is confusing / doesn't work, etc.)