If they're not interested in that market, they're not doing a good job in showing it. They mentioned "Linux" *five* times on that page, but don't explain what it is.
Normal folks don't even know what Linux is, let alone know what the difference between a Linux-based OS like SailfishOS and Android, that would entice them to buy this phone.
It's clear that "Linux" is a big selling factor for this given that they mentioned it so many times, but they do little to elaborate on it.
It's clear who their audience is.