I think most of us who don’t agree with building One Paseo, just don’t feel it’s right for that location in it’s current status, and frankly, for better or worse, most people I talk to prefer sprawl over density–even though they may not express it in those exact words.
It’s true that San Diego is growing, and more and more people will need housing and shopping, etc., etc., but with so little “buildable” land left, even if every tiny sliver in San Diego was built out to maximum density (within current zoning restrictions) I don’t think it would have much effect on San Diego’s affordability index going forward. IMO, the days of affordable housing in San Diego are pretty much over, but, we’ll have to see how this all plays out.