This looks very interesting. I'm not sure I understanding all of the forking though - why not just leverage LineageOS, K9 etc. as is just as to leave more time/

This looks very interesting. I'm not sure I understanding all of the forking though - why not just leverage LineageOS, K9 etc. as is just as to leave more time/energy for the other bits rather than having to separate maintain (security patches etc.) the forked bits?