Looks like the EU can just get a feature flag to use pagination or a "Load More" button? Doesn't seem as big of a deal as enforcing USB-C.
Though if it applies to the YouTube, seems annoying when trying to find a video to watch. I usually trigger a few infinite scrolling loads to look for videos.
And I assume they'd have to specify a maximum number of items per page, or else devs could just load a huge number of items up front which would technically not be infinite scrolling but enough content to keep someone occupied for a long time.