I think the Hume article spoke mostly to how Pinnacle Centre ignores the street, in the area it is in, thereby being an isolated enclave. Not sure how that equates to St.Jamestown.... but the comparisons to CityPlace are quite weak.
I know a lot of you on this forum hate the layout of CityPlace, and feel that it is a "gated community" or that it turns it's back on the city and doesnt connect because there are no north/south streets connecting Front to Lakeshore. I have talked about this a few times before. It is virtually impossible. Say what you will about Concord just being cheap and not wanting to spend the money to link the streets, but it would never happen. Lakeshore is an expressway with a few lights, not the boulevard it tries to be. The city rightfully would not allow more stoplights connecting north/south streets and thereby slowing Lakeshore traffic. The rail lands to the north could be decked over, but there are no major streets to connect to. Connecting to Portland Street would not be worth the cost of a street bridge, and wouldnt add to "connectivity" with the north by very much. There is going to be a pedestrian bridge over that section, so at least there will be some connection, just not vehicular connections.
There is a lot of pedestrian traffic around CityPlace. Bremner Blvd see's quite a bit of foot traffic heading over to Spadina. Once Fort York Blvd connects right through to Bathurst, we will only see more and more traffic. The park, library and other community services which will be added later on doesnt exhibit an area turning it's back on the larger community.
Pinnacle Centre, however, has NO connections with the area it is in. Blame this largely on the poor aligntment of the Gardiner off-ramp. That said, I doubt Pinnacle Centre will be the blight that St.Jamestown is.