I think we're going to need more than a survey of 1500 British households before we arrive at the conclusion suggested in the headline.
I've come around to the screen-free childhood plan, but most people who I know that have implemented it are affluent enough to have a stay-at-home parent or a high quality daycare.
Not using screens as a babysitter requires a significant amount of a parent's time and energy, so I also won't condemn any parents who use that strategy.
Ideally, it's a place our social safety nets would be better, but they're pretty bad when it comes to helping children right now in the US.