Seriously, what's the argument for porn being speech and expression? What is the message it's trying to convey?
Edit: Guys, I'm asking if it's speech/expression and, if so, how. Most of the comments in support of it aren't answering the question, just showing their support for free speech and expression, in general. Only one guy has made a case for it, comparing it to car shows and art. And, even though I have reservations about labeling it as art, I appreciate that he's making a case for it and not just side-stepping the issue.
Another possibility would be a sketchy politician might use legalizing it as an excuse for people who want/defend porn to vote for them.
A shitton of gender criticals will aggressively defend abortion and may even blindly vote for politicians who will initiate politicide against them in the name of regressive leftism, rather than sucking it up and accepting the dissident right's arguments against abortion abuse.
As for art, it's arbitrary as fuck and extreme lack of quality is usually the qualifying factor as to what isn't art, though when it comes to pornography drawings and animations are always artwork and photography and video do not count 99.99% of the time. Parody law is similar as shitty parodies legally qualify as parody regardless of how bad it is,