I know the average Torontonian wasn't into this, but I live nearby and was really excited about what it could have been, even though it was fraught with missteps. This area is a concrete wasteland–just car-parks and abandoned lots–that's now going to be portioned off to more giant, glass condo buildings, and while Sidewalk's proposal had problems, it was focused on building something very different, community-oriente…
You can still advocate for such urban redevelopment and community planning without Big Tech behind it.
Unless you've got a few billion to throw away you're going to have a hard time convincing any developers to build something other than the most economically productive building. and for that location, that's a big glass condo building that looks like every other big glass condo building and doesn't benefit anybody other than the people who can afford to live in big glass condo buildings.