Why would a genuinely privileged class want to draw attention to itself in this way?

The merchants were a privileged class, although they had to make tributary payments to the nobility.

Their basic themes are exorcism rites, ritual dances, biting satire, parody of human weaknesses, social evils and the privileged class.

Nobility remained the privileged class, but the privilege was now practically limited to those with land property.

This annoyed the privileged classes, who did not like it when clothes were used to camouflage lowly birth.