[boredumb]

I would like to say yes but, if it's a comment being restored containing personally identifiable information of the person that deleted it than I would say no. With that said I believe you need to have a formal request to remove PII and I have some doubts if deleting or obfuscating a reddit comment you made qualifies as such.

[jwestbury]

The username attached to the post is almost certainly PII. Unless they're anonymising the post, they're definitely running afoul of GDPR.

This, of course, assumes this is intentional action, which I'm not wholly convinced of. Malice, incompetence, and all that.

[justin66]

GDPR is principles-based regulation. No specific thing you mentioned actually matters, what matters is whether anyone's privacy rights will be violated by rolling back years worth of deletes or edits.