Sadly, I see how this happens. I remember when car loans got longer...and longer, because the cost of cars had increased.
The same thing is happening with real estate prices. They get higher and higher= longer loans to entice buyers.
Yeah, I know the largest part of the interest is collected upfront. But I think most young(er) buyers focus on the monthly payment...not the overall cost of the loan because....they probably are not going to keep the real estate (or vehicle) to the term of the loan.
It's, for the most part, us oldies but goodies that pay off vehicles and houses and keep them.