It wasn't quite what you think - this was largely a younger audience so not fusty oldies like me. His exact position was that SF were doing nothing to "woo" unionists north of the border, that they were likely to push for a premature border poll over all else, and that nationalism can very easily spill over into ethno-nationalism, very quickly if the primary dominant driver of a movement is base nationalism. And that wouldn't work out well. He seemed to be hinting at SF showing a bit of leg RE the housing crisis in order to attract new voters, but having every sign of eviscerating every single tax base that would actually fund resolution of that housing crisis (eg water taxes, property taxes etc). And that this would not be a good base on which to build a large body of social housing.Classic McWilliams. He's very good at telling whatever audience that's in front of him what he wants to hear.
That's what he said anyway. IMO the current issue is critically low sources of available finance for private developers since 2008 crippling private developers, while a lack of focus on new rather than acquisition on the public side are the current barriers to scaling up housing. If SF think all this can be solved by a public only solution, they need both finance AND willing partners to develop, neither of which they are showing signs of understanding how to address.