Definitely agreeing with an option to turn them off.
Since it lingers for so long, even after moving the cursor off the image, it makes the simple act of opening two adjacent images take a lot longer and sometimes I don't actually open the second image. I sometimes accidentally open a random tag thanks to the giant, clickable box. Especially since said box can get pretty massive with the large number of tags (which is a good thing, mind you) on some images.
Applying a userscript is a bandaid, not a fix.