I agree with Harry in the linked comments. Especially considering who ran the survey. If the results somehow didn't support the intended conclusion, to support what's mentioned in the last three paragraphs, you would never hear about it.
"In the 2000s, AEI was the most prominent think tank associated with American neoconservatism.[5] Irving Kristol, widely considered to be one of the founding fathers of neoconservatism, was a senior fellow at AEI and the AEI issues an 'Irving Kristol Award' in his honour.[58][59] Paul Ryan has described the AEI as "one of the beachheads of the modern conservative movement"
I think that might have been an own goal on that link. The comment on the article sums it up nicely. Also can you trust the data source - a government body that wants to enact more control?
If there's independent studies great, especially world wide (the US can be a bit insular), but as someone in the UK I dont see anything but disdain for ID checking age-gating.
Even other political parties are saying they'll roll it back if they get in power, which if they're betting the farm on that policy, must have considerable public influence.
Kids could always get jazz mags from friends, find VHS tapes, be told stories, see topless women etc.
The difference here is that it's easier, but that's partly caused by indifference and technical illiteracy.
If it was a serious enough problem to warrant government intervention the larger public would be championing this cause.
They aren't.
That's not even withstanding that soft porn is often just people showing their bodies, which should never be a problem.