How is this seemingly unreconcilable contradiction of the control of copying and the demand to make others copy explained by you?
I think you fail to understand what constitutes sacraments in a religion. The act of greeting someone is not a holy sacrament in kopimism, nor in any other religion that I'm aware of. Sacraments are well defined ritualistic acts that hold a significant meaning and are at the core of a religion. Like for example baptism, communion, confession and marriage in catholicism.