fuzegraphics, it worked! Thank you! Not only is the link unclickable, but the cursor is appropriately not the pointer that indicates it’s hovering over a link.
Do we still need the plugin? Was this trick only made possible recently?
So, just to summarize, one can in Appearance > Menus make a non-clickable menu item by creating a Custom Link with “#” as the URL. Once the item is added to the list of menu items, one can delete the # from the URL, leaving a blank URL. (Save the menu, of course.) Then the new item appears in your menu as unclickable text. Brilliant!
Thanks again to both passive-house and fuzegraphics!