Well I think its fine that Al forgets the lyrics here and there, as any hardcore fan will know that Al's memory has always been fuzzy .
You're kind of missing the point. Al, Brian, Bruce and Mike are all in their 70s now--if they need the lyrics in front of them, I don't know why that's a big deal. Guess what, their voices aren't in peak form. I'm not sure what either has to do with legacy. Seems like unnecessary shots for a spontaneous performance.