Yeah I see what you mean, that does seem oddly useless. And thanks for finding the correct section.

I'd like to say we could trust the implementation and enforcement of this law to make sense and follow the spirit of existing blog comment sections rather than the letter of a law that could be twisted against almost anyone accepting comments —for most people GDPR compliance enforcement has been a light touch, with warnings rather than immediate fines— but that's not really how laws should work.