I don’t think so. As providers assign a number to each subscriber, like even an Apple Watch technically has its own number.
So the issue is the “way for anyone to demand my number “
Oh. Perhaps a hotspot; and tether to it. And use WiFi wherever you can otherwise? “They” could demand your number but it couldn’t ring you.
Funny story, before they did the 2007 redesigns, they asked users what they wanted to be added; 95% said features that were already in Office.
The Ribbon was designed to make features more findable.
Alas.