There were loads of thoughtless mindless songs in the 50s. There was a reason why schools & churches didn't want kids to listen to it, and why radio stations typically played it after dark.
As to "mindless" that seems to be cyclical, going at least back to the Charleston and including the disco years and the freestyle period.
I always felt that the reaction among some schools and religious denominations had to do with the dress and the body movements. Think "Blackboard Jungle" and the Elvis appearance on Ed Sullivan with just upper body shots...