Here is my two cents:

I believe that as you approach town centers, separated bike facilities like those advocated in the film make a great deal of sense, especially in providing safe cycling access to the heart of the town center. And since almost all of Manhattan below 125th Street has the traffic/pedestrian/cyclist density of a town center, these sorts of separated facilities make sense for that part of Manhttan, and probably significant portions of the other boroughs as well.

Anecdotally, there has been a really noticeable increase in bike use and commuting since the build of the separate "greenway" bike paths along the Hudson and East Rivers, and I agree with the poster above that broadly increased bike use improves conditions for all cyclists. And I also think it's important to note, as someone who trains to ride fast, I wouldn't be interested in using these facilities for that purpose, I don't think that's what they are intended for, and I don't think that's a reason to be against them.

Driving culture isn't going to change. If anything, it's only going to continue to get worse, from congestion, and ever larger numbers of cars, as cars, relatively, continue to get cheaper. To the mind of a driver, pulling over in a bike lane is always going to be a better choice than stopping in a travel lane, given that choice.

So, overall, as a way for providing the "average" cyclist access to and around the City, I think there is a lot to be said for these kinds of facilities.