Changing the default settings wouldn’t mean changing any individual user’s settings. It would mean changing the default settings you get the first time you login. Which the user could then change to their preference.
If you have a bunch of elderly/non-savvy people who are using your server, being able to change the default settings to something sensible for that set of users would be a good feature to have.
I would not want my settings affected by the servers I connect to. That would piss me off.
Changing the default settings wouldn’t mean changing any individual user’s settings. It would mean changing the default settings you get the first time you login. Which the user could then change to their preference.
If you have a bunch of elderly/non-savvy people who are using your server, being able to change the default settings to something sensible for that set of users would be a good feature to have.