Sure, but that does make it more proprietary than say AOSP. That said, although the rest is "bog-standard", the whole middleware (the relevant FOSS bits of SFOS) is based on Qt 5.6 which is absolutely ancient. A bunch of it supports Qt6 due to work being done both by the Nemo Mobile folks and myself (need it for AsteroidOS), but SFOS itself is still stuck on Qt 5.6 for the forseeable future due to licensing issues.

And that's a major issue imo.