I'll Bet....
This is a situation where young marrieds moved into a new subdivision house fifty years ago, and never updated anything or repaired anything because they never had much money. There were people like that living across the street from my parents in the Noughties. Everything in the house was original, and any "repairs" that had been done were strictly the Gorilla Glue, duct-tape and mismatched-screw variety.
And while the place was reasonably neat, it was filthy. Their vision had deteriorated to the point where they couldn't see dirt any more.