Echoing what Mistress Tissa said about younger generations, I'd like to add that the infantilization/Mommy Domme has grown exponentially in popularity. Men of a certain generation can't get enough of it.

I read an article about the growth in popularity, and basically it came down to needing reassurance and a strong "Mommy" role to balance out the chaotic and unpredictable future given current events, especially for mens 'roles', in a world where women are choosing to be single rather than deal with them-- (cue the Male Loneliness discussion) and the definition and state of "masculinity" in today's world!

I generally only use the term if it's specifically asked or fits the scene. I'm not a true "Mommy Domme" but I do enjoy it in extreme humiliation or role plays if the chemistry is correct. --(them crying and begging Mommy not to call them that again!)

More often, it's a "good girl" when I have someone crossdressed or a "good boy" when a pup does his tricks correctly.