You can have all your "really disciplined and highly accomplished musicians - with deep technique." Great music doesn't need any of it which hurts a lot of feelers as it has yours here.Itzak Perlman and the dodecaphonic method? For fuggs sake!
Last time I checked, the status of "great music" was in the ears and taste of the listener. You know absolutely nothing about another persons "feelers" - as if some guy ranting hyperbole about a Beatle band is going to hurt anybody's feelings. Why not get off your Beatle soapbox for a minute and consider what you did back there - you can't explain why you said the silly things you did {?Strad?) - you can't even describe your concept of your term "modern music". The Beatles had their place and left their influence - we covered some of the best of it at the time - sorta knew it from the inside. Some good stuff - but not the hyperbolic effect that some like to rant.
P.S. Kindly tell us about the anapest - if the Beats used it - what it is and its potential effect on the listener - and in which part they put it - and in which tunes. Interested in your reply.