I never said all the boomers would or should sell their homes. It’s just a possibility and a choice that many of them will face and have to make a decision on.
There are plenty of reasons for not getting into a reverse mortgage. They may not want to live there any longer, they don’t want to maintain the place, they don’t want to pay property taxes, they want to have their money free and clear without obligations to a lender, they don’t own it outright and have enough equity in the place, etc…