“Schabas also found the government failed to provide evidence that removing the lanes would alleviate congestion — one of the law’s stated purposes. In contrast, expert testimony presented by the applicants suggested lane removal would likely increase collisions, injuries and even deaths.”
You put protected bikelane on main road mainly because it’s more dangerous to ride there, so now cyclist is out of the main path of the car and car won’t get blocked by cyclist. If there’s less danger on side street there’s no point putting a bikelane there.
It’s also more beneficial if there’s bikelane everywhere so people don’t need to share the road with car, which ironically is what car driver wanted as a lot of them refused to share the road with cyclist.