"By definition, pornography is consensual."
I think that what people who talk like this miss is that bad actors already like to use the word "abuse" in completely inappropriate situations where there is no abuse.
Put it simply, it doesn't matter to them if the actor consented, it is more whether the themes offend them, or maybe they just don't like porn.
It isn't someone's awkward use of the phrase "revenge porn". It is that there are these weird people who hate porn and they go out of their way to attack it.
I've even seen someone using "NCII" (non-consensual intimate imagery) in a tortured fashion to talk about NCII which doesn't have real people in it (which is a contradiction of what the term even means).