Somewhat strange take on it. Applying the exact same reasoning, any loan is a fraud that lets you pretend you have money that you don't have. Compared to flash

Somewhat strange take on it. Applying the exact same reasoning, any loan is a fraud that lets you pretend you have money that you don't have. Compared to flash loans, a mortgage is a far more serious scheme, because you could end up defaulting on it, something that is impossible with flash loans by design (the transaction would revert). Mortgages also drive up house prices for everyone. Fyi, their intended use case is to remove arbitrage opportunities, something that improves the UX for ordinary users because you don't have to worry about buying/selling at a suboptimal price.