MMM makes a good point in that article. Residents who want an interesting commercial thoroughfare need to stop fighting every patio proposal and application for greater density.
I agree on the patios completely, and have no quarrel w/somewhat greater density, although I wouldn't want to see the area go hi-rise, but a gradual shift from 2-3floor to 4-6 floor would be welcome.
That said, I don't think density is the issue here, the area is more dense than it ever has been, but less busy, in the off-season than it has been in quite awhile.
I think there's a mixture of issues at play.
Limitations on restaurant size have inhibited some investments in better establishments.
Greedy landlords, have taken a vacancy rebate rather than rented for less than top-dollar.
For locals, transit is problematic east of Woodbine on Queen, while parking is quite limited west of Lee Avenue.
The Beach parklands are not set up to draw off-season, they still do decently, and it would fall off no in cooler weather regardless, but there are missed opportunities in retail, (the snackbars are all closed off-season), the absence of a great leisure skating trail, warm place to put skates on, and access washrooms etc.
The main strip along Queen has also had next to no streetscape investment. No pedestrian lights, trees are absent on some blocks and in tiny pits or boxes on others.
The Foodland near Queen/Lee does a good job of attracting and meeting the needs of locals for grocery, but they're one grocer.
The Valu-mart further east, could charitably be described as dumpy and entirely inappropriate for the neighbourhood. It should have been 'Bloor Street Market-ed, years ago.
There also needs to be more effort to reduce car use by locals.
But to do that, you have to raise permit parking rates substantially, get carshare into the area in a big way, address woeful transit service on Kingston Rd and excessive irregularity on Queen, you need to find a way to shelter transit stops on Queen too. (canopy off of existing buildings?) , and you have to reduce the car-orientation of near by shopping (Shopper's World, Freshco, Loblaws on both Victoria Park and at Lakeshore/Eastern.
Once folks are driving, its hard to retain the shopping locally.