Lack of the ability to externally link to Wix Anchors (like one can do with HTML on virtually any site!) makes the Wix Anchor system complete useless. Why bother with them, really? You can create an anchor menu on a page with them (which, after trying out, turned out to be a waste of time––so limited!)
I’m also shocked that Wix makes it so complicated and hasn’t noticed their failure with anchors.