Always will call X as Twitter. Same as Meta as Facebook Inc, Microsoft 365 as MS Office, or whatever other companies unnecessarily rebranding themselves these days with their ugly less iconic logos.
I don't know about these workarounds but I remember Win10 has something like "Create for another person" then "I don't have their info" and it will just let you create a local acocunt. I don't know about 11 tho
The default nowadays is Discord, especially for online-based communities.