There is plenty of available affordable housing in Greater Boston. Poor little millennials will have to suck it up and take the Orange Line from Medford and Malden like I did for 10+ years.
pffffttt... millennials are hardly the only people talking about affordability of housing. And the majority of legislation in Massachusetts for helping people with housing affordability has been explicitly designed to help seniors.
Sure, a greater percentage of young people now live at home than at any point since it started being measured in 1880 and all evidence is the percentage of their income going to rent is higher than previous generations, despite them having roommates at a much higher rate than those generations, but, millennials oddly generally end up with housing over their heads.
There has been a surge in the homeless population 40-65 and under 20 in Boston. Once you're over 40, you can't move in with your parents and the government won't help you that much until you're 65. And your kids end up homeless with you.
Here's what the housing crisis has caused:
(1) millennials paying higher rents and having more roommates, or staying with their parents, but surviving
(2) homelessness for kids and middle age people skyrocketing
(3) tax breaks and deferrals for seniors to keep living by themselves in multi-bedroom houses in South Boston for sentimental reasons
If you don't recognize (2) is a major problem, you're living in an unfortunate bubble.