Perl 1 was released in 1987, before object oriented programming was a popular paradigm; while Perl 5 did add an object system, it is very minimal. Moose is an extremely popular module which adds more extensive support for object oriented programming.
I don't know anything about Moose or its history, but I figured I could write something anyway, making educated guesses about how things went down.  Fortunately haarg came along and sacrificed an hour of his time to save us all from that. Here's some stuff we typed at each other, with minor rearrangements and editing to make me look literate. Any resemblance to a real interview is entirely fictional, and you should contact your doctor if it lasts longer than 4 hours.