Sorry ... I should know by now that sarcasm doesn't work well on the Internet. But the truth is that the server is de-facto obsolete if there are no clients that can talk to it. Hopefully my second paragraph is clear that I don't appreciate planned obsolescence.
It is. With a design focused company, everything you do on the system is thought through and designed — your copying of a file is part of a user story that somebody wrote.
Unlike Microsoft, Apple tends to focus on one or two ways to solve a problem. Generally speaking, if you’re having trouble doing something on a Mac (as a user) and it seems very difficult, you’re off the path and would be better to start over and rethink what you are doing.
When you’re doing something like relying on a deprecated protocol that Apple barely gave a shit about, you’re on thin ice. At best there are a couple of engineers and a strategic customer who care about the feature and it will sort of keep working. If not, you are out of luck.