Extra supply in already dense/popular areas is fighting symptoms, an uphill battle that will always lag behind actual relief. Doesn't mean you shouldn't try that, I'm just saying to include a wider framework of ideas.
For example, can we rethink how and where we work and how we commute to it? I know this is easier said than done, but I find it bizarre that the number one reason for urbanization, work, is just not included into the thinking. At all.
Further, plan for the boomer exit rather than calling them names. In my country, the Netherlands, many boomers would love to scale down in housing. But those units don't exist. Up to the 90s, we'd have communal living for the elderly where they have small private housing with shared facilities and care, but now most of this is gone.
So they have nowhere to go. You can call them names, tax them (whilst most have no liquid income), none of this is a solution. I'm not saying to pity them, I'm saying a rational and intelligent plan needs to include them whether you like it or not.