It may be that some media or some alcohol is more toxic than others, but it's still fair to test whether the mode of administration has an independent or enhancing effect.

E.g., crack cocaine is more addictive than nasal, and extended release Adderall is less addictive the immediate-release. So there's good reason to hypothesize that SFV has similar addiction-enhancing effects over long-form, and the article meta-analysis says problems in inhibition and cognition are among the strongest.

wrt choice, the thing about addiction is that while becoming addicted results from a series of choices, being addicted impairs your choice-making executive functions. Addicts use even when they don't like it, and to the exclusion of other things they prefer, and often switch from expensive drugs to cheap ones just to maximize use.

So in the same way that society would prefer to prevent rather than treat legions of fentanyl addicts infecting cities or meth addicts roaming the countryside, society would like to avoid the cognitive decline and productivity loss of a generation lost to scrolling.