The "Cambridge University study" at the heart of the article is described as showing that "porn’s effects on the brain are neurochemically identical to drug addiction". Actually, it shows nothing of the sort for most people. It shows a reward effect for people who self-identified(?) as exhibiting compulsive sexual behaviour, which is "excessive or problematic engagement in sex". Importantly, it didn't identify a growing trend, didn't correlate watching porn with the development of compulsive sexual behaviour, and so on. No amount of saying things like "porn isn't content, it's a substance" will change that.
Compulsive sexual behaviour is literally defined as problematic, but it's not obvious, and this article certainly doesn't make the point, that porn causes or exacerbates compulsive sexual behaviour.
The author says this as though they don't realize that the demand didn't decrease but was just redirected to sites that don't care about the ID check.
One of the explanations I've heard (that seems reasonably plausible) is that it allows the creators to add a "kink" to the porn without needing to actually change much of anything.
I have been online for quite some time and never seen most of that list.
I think some of those can't even be found on the major sites.