No, Toronto isn't a "Global tech leader"

A lot of startups, but a significant amount seem very "gimmicky". (Probably less than SV, but it seems there are less companies that "started up" then grew to a significant size). That or you can work for the Megacorps, usually in the suburbs in their lifeless campuses.

Not to mention the salaries.

Also Canada tech companies in general seems to use less open source than USA or Europe.