Welcome! The fact that you’re reading this means that you probably care deeply about the issue of privacy, which warms our hearts. Unfortunately, even though you care about privacy, or perhaps because you care so much about it, you may feel that there's not much you (or anyone) can really do to...
Hell, even SMB really can’t easily/cost-effectively run without MS.
Sad, but true.
Unfortunately it can’t either be run in a solid and stable way EVEN with MS. The Windows’ SMB client sucks as well.