On that note I wonder if he’s keeping any records of work done for this length.This screams of an answer of someone who thinks they're avoiding a GDPR-type trap, but yeah this is rubbish.
So once they've paid the invoice they delete all the information? So why is he reposting old photographs and invoices? What if there are issues with the works - construction companies generally have a 12 year liability period and it would not be unreasonable to expect records about the works undertaken to be retained for that length of time.