Many young people - eg those making minimum wage - live with roommates or in studio apartments and don't really feel significantly disadvantaged by the fact that they can't afford a 1br apartment.
I say this not to say that everyone is doing fine, but that the details can matter a lot.
On a different note, for a fixed amount of housing stock, it is a purely positional good, you can't improve the number of people who can afford a 1br by simply paying people more, you have to build more, or enforce strict rent controls which makes it not a problem of income, but one of luck and inevitably corruption.