And furthermore, though I am technically twisting your words to my own end, I do not think that it is such a crazy hypothesis to say that higher classes lead more 'morally inert' lives, because many healthier memes allow you to 'skip' the moral dilemmas altogether; e.g. contraceptive use, abiding the law, taking care of your health, surrounding yourself with people who do all of these things and have all of these healthy memes, etc.

Many of the world's greatest moral improvements rested precisely on using some material means to transform some choice people just aren't very good at making from Highly Morally Significant to Mostly Morally Inert. Contraception and universal education are probably the easiest examples here: we all know that people are going to have irresponsible sex and that most people aren't very intellectual. Making otherwise irresponsible sex and otherwise irresponsible anti-intellectualism increasingly harmless has done way, way, waaaaaaay more for overall well-being than literally centuries of haranguing people to become more chaste and learned.