JdeBPQuite a few people are singling out this one person, and #systemd.
Just remember that within a mere 11 hours of my predicting all of this, from the #GDPR conflicts to the whistling up a storm, and a few days before the systemd PR was opened, a completely different person had come up with a concrete proposal, for #Unix and Unix-like operating systems in general, for this sort of #AgeVerification support.
https://mastodonapp.uk/@JdeBP/116156019252249071
Predictions and the original post of the proposal, later re-posted as a top-level message by that person, in the thread.