Deprecating scp

Having had the misfortune of working in an environment that mixed modern Linux, ancient Solaris, and weird real-time UNIXoids, I laugh at the notion of "a tar stream", as if that is somehow well-defined. You don't even have to go that far out in the weeds to find incompatibilities; read https://mgorny.pl/articles/portability-of-tar-features.html and despair.