Open source file manager Material Files lets you set an SSH server as a bookmark and mount it instantly. Moving files around just like like it's native. Works seamlessly through Tailscale.
You can grab that shell file and examine it. You can also check it out from their public git. I agree that this is bad practices, but not exactly uncommon.
In the early 2000s, only my rich friends had cell phones. My roommate and I both had accounts on each other's machines so we could telnet into them on the same local network.
We used to do this all the time to each other. It was funny to us 25 years ago. It's still funny now.
I love it. I can run my microphone through noise-canceling when using video call software that doesn't have its own noise-canceling. I can run an audio compressor over mpv if the movie does that loud explosion/quiet talking thing. You can assign each application a different effect stack.
I can still use a 2003 AMD Opteron with the newest builds of Linux. It's an open standard. As long as the hardware still physically works. The only reason these pieces of hardware are EOL is because they chose to lock them down.
Help me understand how this is Open Source? Perhaps I'm missing something, but this is Source Available.