In my definition of "low level" I don't exactly mean the base linux packages but rather a base package nearly all linux distros have that's not interfaced or used by most "average users"
Some linux distros (such as Fedora and Debian) patch ssh to link against libsystemd-notify to enable it to send systemd notifications and interact with other components libsystemd-notify then links against xz and other libraries
Ah, so xz wasn't actually something in use with SSH at all but rather added code that used the systemd-notify to know when to execute that separate code?
Inb4 linux distro with patched SSH with "Commercial grade easy access remote support!" with a picture of a dude smiling with a headset that only has one speaker
It's so weird, feels like usage of FOSS and Linux is growing but as you say, it feels like software maintenance and programmer availability is shrinking
One side will argument "See, FOSS is filled with people who can maliciously add anything they want and ruin things, commercialised software has a reputation to keep so therefore won't ever happen!"