WTF is a "GEGL" operation? I've been using (and have written) image-processing and -manipulation tools for decades, and I've never heard of such a thing.
End users really don't need to know about it. Its exposure in the UI is likely just because a lot of stuff it can do isn't available yet in the traditional GIMP UI.
"End users really don't need to know about it... a lot of stuff it can do isn't available yet in the traditional GIMP UI"
So why "don't they need to know about it?" And regardless, putting a meaningless label on it is a user-hostile blunder. This blunder is not all that uncommon either. Affinity did it by burying a bunch of stuff under a menu item called "Studio." Not as bad as "GEGL", but still meaningless.