I reckon that's 2.8 km in 6.75 minutes. About 25 km/hr on average, including stopping at red lights. Peaking at well over 30 km/hr in a 20 km/hr zone. So bike should be in road, not on trail.
Still averaged 22 km/hr including 2 longs stops on red.
I'm surprised how narrow the sidewalk is in places, particularly along Queen East in front of brand-new developments - here of all places I'd think it would be wider. As the population in this area increases, pedestrian/rider interactions are going to worsen.
Also the problem with the major lights is evident. All the people stood waiting to cross Queens Quay don't fit between the trail and the streetcar tracks. So where else are they going to stand?
Well, if the pedestrian lights/signals were better placed, they could go from the sidewalk on a green across the trail, the tracks and the street.
I'm not sure your focus on bike speed is relevant. If going over the posted speed on a dedicated roadway is such a problem, the cars on QQW should be on Lake Shore or the Gardiner instead. Most cyclists certainly don't reach 30, and a
22-25 average isn't something most people sustain. I did 20-25 through most of my ride this morning, peaking at 35 in an underpass but my average was still under 20.
The problem in the second video, shot at a time when there are more pedestrians around, is not the narrowness of the sidewalk - it wasn't crowded by any means. It was pedestrians wandering obliviously on to the trail, which, while it isn't exclusively for bikes, is still a multi-use trail ... not a sidewalk.
The whole point of separating bikes from cars is so cyclists don't
have to achieve the same speeds they do on a dedicated bike track when they're among cars just so they can keep up/get out of the way. Doing 25 or more when the posted speed is 20 (again, it's still not clear if this is a recommendation or if it has the force of law behind it) happens because slower traffic participants are drifting onto the track - it's just as much a problem of inappropriate use as it would be if people on bikes decided to use the sidewalk there.