I’d say there’s an initial learning curve of the basics that isn’t bad. Kinda like learning programming for the first time; it’s a different way of thinking and for something like Sudoku I’d say it’s even pleasant.

But when you try to write a CLI videogame, or anything with an evolving internal state, then Prolog stops being the elegant logic system and instead becomes big bundle of edgecases where nothing makes sense practically or theoretically.