Ability to globally edit or delete a tag

The AI autotag feature added loads of similar sounding tags to contacts and has created an unwieldy list when I try to add a tag or filter them in a list view. (I have no idea how people can use AI Autotag - am I missing something?)

I would like to go to a list of all the tags, see how many contacts are assigned to them and edit the tag name or delete the tag.

Removing all instances of a tag from a contact does not seem to do this (unless there is a time delay)