[Sileni]

Sure, but those lists exist as well, and are curated by much more qualified people than the Rolling Stones editors.

/block of unsubstantiated opinions/ I don't think Rolling Stones claims to be a full list of all music of all time, nor do I think their editors would claim to be experts in all music. I dare say they hardly claim to be experts. I'd imagine they'd say they were more interested in being entertaining.

/going off the rails a bit/ Now that I think about it, it would honestly be pretty disgusting if they did try to make a list encompassing all of music. Either it's strictly analytical, at which point you're really asking "What's the best selling of all time", or it's saying "our opinion is a proxy for every other opinion". The hubris of that kind of project would outweigh any good it could do.