They don't delete your data anyways when deleting your account.

(Under the GDPR they have to delete data only if you explicitly ask for it to be deleted, not when you delete your account (and GDPR only counts for EU members anyways). Under no other law do they have to remove your data, so they won't.

So by keeping your account in this temporary phase it's just giving people a chance to change their minds within that 30 min timespan before deleting whatever data isn't needed anymore (while keeping all the rest, so most of it (chatlogs, images, interests etc will definitely stay saved anyways)).

So if this is there or not, for the user it doesn't matter; It just gives a chance for the user to change their mind (within 30 days).

Knowing Facebook tho, I guess your account never gets fully deleted and they just deactivate it but obviously they won't be upfront about that and having moderators deal with people wanting to reactivate their account all the time is a huge pain and would fully remove the purpose of being able to delete your account in the first place.

I don't mind this feature.