Interesting note on this age old subject. I happen to be listening to a live version of Dark Side of the Moon yesterday. It was very different from the original. This totally removes any credibility of the arguments of the 100%ers. And that is without going into detail on Lynrd Skynrd. Time to put that one to bed.
I obviously can't speak for everyone, but I've known a few people who would obsess over knowing every single note for original recordings and in my limited experience they seemed like the type of people who played for the technical challenge and the music seemed kind of secondary.