firstly, i thought this list said "today." i hardly think "float on" or anything worse on MMs worst yet is a continuation of their greatness, which is nonexistant. dave grohl? rad. but what is he doing? beck, have you heard sea change? he's one of my first favorites but the man is doing the exact opposite of what would be considered important, reaching in deeper and deeper to make more personal music devoted to his core base, which is great (bjork is going the same route and i happen to love it) but as far as important/relevant, it's really rather losing out.
it's not about mine vs yours, it's about genres. you talk of the most important bands/artists today and instead relegate it to rock/indie music. techno enthusiasts would list matthew dear, for example. others could say LCD soundsystem or ali faka toure, for all i care. but such lists of importance or relevance would have to have a fairly lucid understanding of most genres of music, then impart their own opinion of what important means.
and goddamnit, i see this exact list 6 times a week
