My first thought exactly. Particularly with any area that's largely single-family dwellings, this would completely galvanize opposition to transit, as the locals would quite correctly apprehend that it's the fast track to having the neighborhood change, and explicitly so.

It's also essentially a way of telling everyone "want a life where rail travel is your primary commute? hope you also don't want a single-family home."

Now, maybe that's an acceptable loss, given that single-family neighborhoods are already not exactly friendly to rail lines coming in, and they are by nature exactly in heavy supply near rail.

Or maybe the unintended consequence is going to be to halt the expansion of rail.