Another update and possibly a solution for some case where posts were not properly deleted. Seems I jumped the gun on this and the restores haven't been intentional - at least not in this particular case....
TEXT FROM POST: "Attached: 2 images đź‘ż PSA: #Reddit is restoring deleted and overwritten posts to save what they consider "their data". This is a new low and probably illegal at least in Europe. You can send a GDPR or CPRA request here: https://www.reddit.com/settings/data-request These are screenshots of my profile on June 14th before and after overwriting and then deleting all my posts with Powerdelete. Today, June 16th all my posts have been restored by Reddit without my knowledge or consent. #redditblackout#redditmigration#kbin#lemmy"
In case you live in Europe: keep prove of the deletion and if your comments are recovered keep proof of that as well. Under European law (GDPR) you can file a complaint. If a large amount of people claim violations of GDPR Reddit's gonna have some issues.