The video is very americentric. Most of the issues are with implementation. Many of the things are only a problem in the way that they are used in the US.

Streets that are one way for cars as a consequence of reducing cars to a single lane are a good thing. The american version is keeping the street the same size when making it one way. The result is turning an entire downtown block into a highway median with 4-6 lane one-way roads on either side.

Modal filters are a good thing, but that's basically never done in the US. Culs-de-sacs are always built in car dependent suburbs. Culs-de-sacs are not connected to stroads, but small neighborhood streets. They're deliberately constructed dead ends to prevent thru traffic with no consideration for anyone outside of a car.

Its pretty common for there to be dirt paths through someone's yard. A few sympathetic homeowners will let people walk through their property when they realize the neighborhood was designed to require children walk 30 minutes in the wrong way to get to school.

One ways and dead ends are good tools for building urban places, but they are never used well in the us.