Now that I see all of them jamming with Yoko and having fun with it, I think her presence is pretty awesome. They were experimenting with sound collages long before she entered the picture, and Yoko's nothing if not a sound collage in human form.I laughed when I heard that as well.
That being said........through the first 1.25 episodes (I can only take 30-40mins at a time) I find her presence annoying to me. She is like a cling-on and just sits there looking judgmental......and then that period where she was just shrieking into the microphone......my ears will not unhear that. That all being said, it doesn't sound like Ringo or Paul cared that she was there or that she was an issue per se......based on PM's "In 50years..." comment