Well it depends, because by saying that you're implying that having fun and enjoying your time with something are the same thing. I'm glad that I got to witness the execution of the Red Wedding scene in Game of Thrones but just because I enjoyed seeing how it was executed I wouldn't argue that the scene is fun to watch; I personally found it quite uncomfortable.

You can appreciate that you witnessed something without finding it fun. I found The Stanley Parable funny, engaging, and different, but I wasn't thinking 'Damn this is fun' while playing it in the same way I would with something like Devil May Cry. If I sat down and thought 'Man, I feel like playing something fun' my mind wouldn't go to that game because I find it more enjoyable to experience than fun as far as core gameplay is concerned.