They are
They are
Off topic, but as a pen lover - those are lovely! Especially enjoyed the second two from the left.
You don’t need to run an X server on the headless server. As long as the libraries are compiled in to the client software (the GUI app), it will work. No GUI would need to be installed on the headless server, and the libraries are present in any common Linux distro already (and support would be compiled into a GUI-only app unless it was Wayland-only).
I agree that a GUI-only installer is a bad thing, but the parent was saying they didn’t know how it could be done. “ssh -X” (or -Y) is how.
ssh -X
I think there’s an exception to be made in your argument for abandonware. There are classic arcade games that wouldn,'t exist any more but are widely available due to MAME support.
The way this works in the server world is “95th percentile” billing. They track your bandwidth usage over the course of the month (probably in 5 minute intervals), strike off the 5% highest peaks, and your bill for the month is based on the highest usage remaining.
That’s considerably more honest than charging you based solely on the highest usage you could theoretically use at any time point in a 24 hour period (which is how ISPs define the “max bandwidth”) and then charging you again or cutting off your service if you use more than a certain amount they won’t even put in writing.