I would still carry out that strategy. Android for the masses, and a real Linux as a different product aimed at enthusiasts, privacy aware and governments. That market is growing. Even Apple is focusing on privacy-aware people.
My Nokia N9, which is inferior to the N900 in some ways, is still ahead of many smartphones of 2018 in a few key aspects. The UI is incredibly elegant. Furthermore, its a real Linux machine, with a real terminal and a regular userland. And offline navigation is amazing.
I still use it often. The hardware is beautiful in a way very few products are.