Monster Girls - Good Moo-ning

This is a nice picture and all, but am I the only one who thinks it’s kinda weird when the monster girl calls the guy Master?
Like I’m cool with Miia saying Darling and Rachnera saying Honey, cos those are terms of endearment. But when she says Master, it seems less like they’re equals and more like he is above her. Unless you’re getting really kinky in the bedroom, would you call your partner Master or Mistress?

Sorry for the long post, I know it’s probably not the place for this, just wondering why.

no u