This is an unhappy development. I sincerely wish MAS would frown on this. As a rule of thumb, it punishes thrift and reward loading up on debt. It makes our economy more prone to shocks beside elevating the price level of homes.
Debts is a great invention but must be respected, even feared. It is a good servant but the harshest taskmaster if you fall under its spell.
Update: 3:45pm We all know this for a long time but perhaps some of us do not work this out far enough. The big assumption of a housing loan is that it assumes your pay will rise over time. Therefore the immediate affordability trumps the tenure of the loan. This assumes the the economy would always grow (this is the bit many miss) and that if necessary (it turned out to be necessary!) debt must be used to fuel that growth. In this system, it is either you grow or die. Democracy cannot be supported without economic growth because government cannot find the money to remain successful and popular. That is why our government will never ever entertain any suggestion of less than peak growth.
Unfortunately this growth strategy cannot go on indefinitely but no one wants to worry about this. The solution is to keep looking for new sources of growth. The better way is to grow through innovation and entrepreneurship, which we can and must do a lot better. We drove growth by the worst possible way: adding inputs with low and may be negative productivity. We end up with all the social and infrastructure problems we are living down today.
Update: July 23
I am elated by some of the responses to CNA prompt today.