Since it is a mandatory legal issue to give this option in the forum, I think it should be included in the kernel and not as a plugin
GDPR: Legal Background
Companies must implement the GDPR by 25 May 2018. The steps required for this include the definition of policies on how personal data should be stored and, above all, deleted. The legal requirements which stipulate when a data controller must delete personal data are described, for example, in Art. 17 and 25 of the GDPR. In principle, personal data should be kept only for as long as absolutely necessary (the so-called “storage limitation principle“, cf. reason 39 of the GDPR). An obligation to delete personal data may also arise if a data subject requests the deletion of its data as per the “right to be forgotten” (Art. 17 GDPR), if they revoke a previously given consent, or if they object to the further processing of the person’s data.
since the appearance of the gdpr the forums with years of antiquity we have received and continue to receive requests for casualties and the system should have something planned