Do you think all of the millions of owned but unoccupied houses are just "whoops it took me a couple extra weeks to sell"? It's ludicrous to suggest it's a sign

Do you think all of the millions of owned but unoccupied houses are just "whoops it took me a couple extra weeks to sell"? It's ludicrous to suggest it's a significant fraction of the total, or that the suggestion is to require the immediate forfeit of any house when the owner moved out.