There are some specific harms of pornography, but it shares a lot of dimensions with commercials, marketing, and other media.
The entomology of the word porn even indicates this. It means “to sell off” eventually meaning prostitution, which is a sales activity primarily.
Digital porn scales well, though this isn’t good for most. We’d be in a better world with non-scalable sex work instead. It’s more ordered and aligned with the human experience.
The digital whores are not human, and you can’t have sex with them, which is the whole draw no?