I think the basic premise would be that seniors 55+ (OMG in 3 years I’m there) would move from larger homes to smaller units which are easier to maintain/lower utility bills/have more amenities close by.
This is probably a longer term play. Data would show up with:
relative increase in portion of larger homes 3/4 BR+ on market
potential for more demand for smaller units (Condos)
I think it is a relatively small portion of the population which will
1) understand this 2) research the move 3) act on it
There may actually be some public records which will show the number of applications etc. My guess would be less than 10K persons would do this, but then it occurred to me, there may be places like some parts of greater Orange County/Pasadena where prices are higher than SD. It may put some regional arbitrage in play, still that on balance would slightly pressure relatively higher end markets. Long story short, impact will to raise the floor at the low end put a slight amount of pressure on the higher end legacy markets. Probably a health thing on balance.