I regret that I also remember Automatic Crispin, crane shunting and the erstwhile Mr Freezer talking about Fiddle Yards in his many books.
For me, its a generic term that encompasses all areas where trains are stored, re-marshalled or removed. I agree that hands-on is not ideal so I use cartridges. The train consist is not changed but the area gives me the chance to remove it wholesale from the layout and replace it with another set of wagons/coaches/whatever. I would still call that a Fiddle Yard.
I agree that the format does not matter - if it works for you, its right for you. Traversers and sector plates can be beautifully made but still do the same job as a length of track nailed to a length of wood. I would encourage newcomers to experiment with various types - we all seem to have our favourites and those decisions are made by having/using different types on layouts as we develop our skills.