I’d be interested at which width distinction is made? Width is an established tag and might be considered “verifiable”.
Picture shows a “Steig”. I’d say width=0.25 - ÖAV (our top ramblers club) cartographers require similar minimal width for something to get the respective signature on their map, so it can be walked not in a cat walk fashion. (There may be exceptions for some very prominent routes.)
Unfortunately, width not always as easy to tell for trails where surface ground as in picture above.