Update: They just open-sourced it https://github.com/Floorp-Projects/Floorp-private-components
cross-posted from: https://kbin.melroy.org/m/foss@beehaw.org/t/170330
See also https://forum.endeavouros.com/t/floorp-going-closed-source/52783
Ok sure, but most people associate proprietary with closed-source. What’s wrong with just saying source-available (instead of open-source)? Calling this proprietary just leads to confusion.
Because it’s not really about the “availability” of source code, but more about what you can actually do with the source code. If you don’t have the four freedoms it’s not free software.