They are turning the frogs on Uranus gay!
Another factor in this is "Are you (or others) suddenly more likely to do the task more often, if it is faster/easier to do?" (assuming that there is an advantage in doing it more often).
I'd argue the opposite. If we want to restrict access of kids under 14 to social media for example, then the parents should just be able to tell the device/browser, that they should inform the websites that the user is under 14. not the exact birthday, not even the year, just <14, <16, maybe <18, so that the website can adjust accordingly. That would be way less invasive then having everyone show their ID on account creation.
I was surprised about this ratio (and the fact that it seems to work for them), too. I could imagine that a large percentage of lurkers and a maybe more reasonable community than other platforms could be helping factors?
My mastodon account is on a kind of small instance, and I'd love to be able to report posts directly to the originating instance, without also reporting it to "my" admin. I just don't wasn't then to waste their time locally blocking a clear spam account, that should (and usually will be) removed by the originating instance in a couple hours.