The other factor is that most TFC players (and most other people involved with the team) are closer to the average person in Toronto than your typical multi-millionaire athletes in other pro sports.
They live in and are part of the same communities as their fans.
A TFC players might get their hair cut at the same shitty Top-Cuts you go to.
A trainer may be a regular at the same divey restaurant you frequent.
A player might live in a tiny one bedroom condo in the same building as you...
Basically, there are more opportunities for the lives of TFC people to intersect those of the average TFC fan compared the uber-rich athletes of other pro sports, driving their lambos home to the Bridlepath.
I've run into many TFC players and coaches all over town... I've very rarely run into any Leafs or Jays.