It is helpful for people who were paying attention to the perl community with any passing interest at any time in the past 20 years. It is not helpful for people who weren't. But the former describes a lot of people here.
Absolutely! In the same way that saying the "Dugong Dugon" is a type of fish even though it's technically a Sirenia.
Here, "some swimming creature" is the totality of the objective, we aren't trying to do a crash course in marine zoology or trying to explain what a Sirenia is or what a fish technically means.
Saying it's perl-6 means that it's not say, lisp-like or some kind of prolog or haskell. It's a relatively swift approximation and that's the totality of the objective.