Luxury isn’t fitting for a fool; even less so for a servant to rule over princes.
Delight is not seemly for a fool; Much less for a servant to have rule over princes.
Luxury is not fitting for a [self-confident] fool–much less for a slave to rule over princes.
Delicate living is not seemly for a fool; Much less for a servant to have rule over princes.
Fine things are not fitting for the foolish, nor is it fitting for a servant to rule over princes.
Delicacies are not seemly for a fool: nor for a servant to have rule over princes.