This is exactly it. The notion that they easily shift that ownership of the mortgage onto their renters saying "stuck paying someone else's mortgage" feels like mental gymnastics as it 100% is your name on that debt and not your renters.
However the cheap leverage and massive influx of foreign investment kinda fell off which made prices drop like a rock in 2008. I wouldn't be surprised to see it happen again in late 2020 and 2021 when a bunch of people see balloon payments from deferred mortgages.