My Little Pony: Friendship is Magic - ButtonMash in Official Episode

You do know that he started out as a background character in the show, right. Here he is in S2E17:

"This one's too young."

Yeah, momma dearest is the OC, not Mash himself.

Though, you can still say his appearance is referencing it. As the fandom's use of him really is the only reason they'd bring him back.