That is technically not correct. GDPR only covers personal data with several important caveats. So you can't be walking around and claiming that it's all person

That is technically not correct. GDPR only covers personal data with several important caveats. So you can't be walking around and claiming that it's all personal data and it all has to be deleted. The law doesn't work this way. This is a silly example, but nonetheless - you can't ask police to delete your criminal records. Nor can you request your bank to delete all transaction records from your bank account - even if you are leaving the bank.