Yeah it is hyperbole. It is utterly ridiculous.
There are millions of people all around the world using firearms that hurt no one. They may own firearms 100+ years old who never hurt anyone. Millions use their firearms every day for sports, hunting, or recreational shooting. Lumping these people in as “not far up the scale from [pedophiles]” is baloney.
Conversely there are no people viewing child porn that don’t directly contribute to child abuse. One can’t possess child porn with out a victimization of a minor taking place.
As @anon62122146 said, wanting to ban certain guns or change the laws to include licensing or registration, I too can understand that even if I don’t agree with it. Banning books and information one feels that fails the “community standards of decency” is all well and good, until you have some like, oh, I dunno, Trump, deciding what is “decent”.
I have been assured by other Australians that there are still plenty of guns in Australia. Over 800,000 owners by the look of it.