@kat That said, he serves a purpose to the setting, which this does a good job of explaining: https://fuckyeah-animalcrossing.tumblr.com/post/668048555795234817
He's aware of his role as token financial obstacle that serves a point, and in earlier games, even cracks a joke about your town not having social security after you pay off your entire loan. Which is why they set him up both as a sympathetic character (he's a foil used to deliver a message) and not (he canonically gets rich off your efforts over the series).
@kat But yeah, a lot of that lesson aged poorly, when the arrangement he offers now looks like a great deal compared to cartoonish evil and unattainable housing.