Are cars or guns regulated because of addiction? No. So GP compared porn to sugar, which is considered addictive and has probably more concrete evidence of self-harm than porn. I think the comparison is apt? Certainly fairer than comparing porn to driving a car or gun possession, which is sort of absurd.
Addictiveness was one of the multiple points I made about pornography. The other aspects apply to pornography and not to sugar. So it was apples and oranges to begin with.
But in terms of addiction potential alone Utah already has precedent in legislating for that. Example: Utah doesn't allow minors to purchase alcohol because of its addictive nature.
Most of your other points related to how pornography is produced, not to its consumption. Thus it wouldn't matter who is watching it, and thus ID check seems irrelevant.
Some of the aspects of the porn market are not great, but they should be investigated by the relevant authorities. Hiding them from only certain people won't make them go away.
Are cars or guns regulated because of addiction? No. So GP compared porn to sugar, which is considered addictive and has probably more concrete evidence of self-harm than porn. I think the comparison is apt? Certainly fairer than comparing porn to driving a car or gun possession, which is sort of absurd.