How does one DISABLE the new Split (top/bottom) tool/navbar feature?

This should definitely be something that is optional. I’ve seen many posts requesting the bottom bar, so I know there are users who want it. But there are many users who don’t. The only way to not alienate users is to give us a choice. So why not just provide an option for top, bottom, or split nav?

We already have issues logged asking for this option to be available as well as to implement alternative solutions: