Looking more, there are lots of editor bindings that are not on the menu that are more important than this.  Example: Center insert, ^L, scrolls text to bring insert cursor as close to the middle of the window as possible.  It does move the position of the cursor within the doc.  I discovered the existence of this and determined its actual behavior by reading the code.

Some are listed in the doc, section '2. Editing and navigation'. Anything that can be user configured can be discovered, but not everything is.

If this feature is kept, it should be on a submenu with other missing items.