They absolutely do allow that, they just ask that you send them a request which they regularly respond to. That doesn't violate GDPR or CA's law, and why should it?

One of the major elements of this site is that it's a building knowledge-base, at least in theory, and people randomly gouging parts of it out on a whim is unhelpful. By adding a (legally acceptable) step in between the urge to delete and the action, they toe the line while discouraging tantrums.