There are plenty of public interest limitations on free speech. Food labels, cigarette warnings, deceptive ad laws. Regulating addictive social media isn't really an outlier here.
The parent comment set up a false choice and then had to adapt to the response calling their bluff.
The issue isn’t with reading or consuming content, as was set up in the challenge above.
The issue is with designing feeds and surfacing content in ways that take advantage of our brains.
As an analogy, loot boxes in video games, and slot machines come to mind. Both are designed to leverage behavioral psychology, and this design choice directly results in compulsive behavior amongst users.
I didn’t mention time? From Cambridge dictionary: ‘addiction: an inability to stop doing or using something, especially something harmful.’ I am in support of regulating things which are harmful and which people have trouble not doing
I don't impulsively drive to the store to purchase another bag immediately after finishing the one I have whereas (for example) many people exhibit such behavior when it comes to tobacco.
In the case of social media the feed is intentionally designed to be difficult to walk away from and it is endless (or close enough as makes no practical difference). Even if it weren't endless, refreshing an ever changing page is trivial in comparison to driving to the store and spending money.