"Age-restriction laws push platforms toward intrusive verification systems that often directly conflict with modern data-privacy law" - when you make rules contradictory, someone always violate these laws, and you can use selective persecution to "convince" companies to favor you, the incumbent politician. You don't even have to use such power, just a "joke" may be enough to send have any rational CEO licking your shoes.
European proponents of "anti-big-tech action" make it pretty explicit - broad discretionary power should be given to executive branch, because otherwise "international corporations" will use "loopholes" (and these "loopholes" are, in practice, explicitly written laws used as intended).