Not exactly. What that does is to open out all the tracks from all the albums below (which again can be an enormous list if there are a lot of albums for the artist in question).
The current setting is 'Show the tracks....directly under the selected artist'
With a single click, this opens out just a neat row of album covers belonging to the artist, allowing you to quickly drill down into the album you want.
The problem is that the group of album covers always opens out horizontally so if the artist in question has a lot of albums, most of these will be off the page to the right and you need to scroll this list horizontally to find the album cover you want.
So ideally, the group of album covers for any artist should wrap at the width of the main panel, so the album covers can all be seen below with just one click.
Then when you click on any of these covers, the tracks in that album would also open out (as it does now).