I think porn is an 'everyone' issue. It affects different groups in different ways even though there may be some overlap between demographics. But, I do think it would be helpful to tackle each issue independently where it's appropriate, depending on what is being discussed.

For example, I think this guy's post should be tackled as a gay men's issue due to the various ways in which porn affects gay men specifically. And his post was largely a discussion about the hypocrisy of some gay men who oppose women's exploitation in porn while continuing to support the industry with their consumption.

Similarly, the specifically misogynistic exploitation of lesbians and bi women in porn is a lesbian and bi women's issue.

If the discussion is about porn addiction then that's mainly a straight men's issue because porn addiction is mainly a straight male problem (even though obviously anyone can be addicted to porn).

But obviously these things are connected, and when the discussion is about the ways in which porn affects all of society then we can tackle it as a societal issue.