I'm from Spain and during the last couple of decades cities have experimented a lot with urban planning, including turning streets into one way with broader sidewalks, or turning them pedestrian only.
Anecdotally I can say that every street turned pedestrian has been wildly popular, massively revitalizing the area.
A busy road in the downtown area of my city has been under construction for a while recently. It's entirely cut down on car traffic because all the cars are diverted, and what's really cool to see is there's been a significant bump in pedestrians in the area since the cars have left. When the construction hours end, the street is silent and clear and people are crossing between neighborhoods without any difficulty. Of course, because I live in the US, this is only temporary and once the road is "fixed", they'll allow the loud and dangerous cars to take it over once again. I do have some hope with lots of recent news around this topic that younger generations will fight to remove cars in unnecessary corridors.
I'm not meaning to take away from what you are saying, but your blocks are some of the very best pedestrian designed and sized the world.
American blocks are by and large, boring, stupid and hugely oversized. Making them pedestrian only would solve nothing when most towns in america are covered it "Stroads"
Since you know about StrongTowns you probably already know this but I'll leave this here.
This is why, in the USA, we need to address the regulations that require us to build houses like this: Offsets, R1 zoning, height restrictions, minimum parking, road width requirements, etc...
Anecdotally I can say that every street turned pedestrian has been wildly popular, massively revitalizing the area.
You can also check out Barcelona Superblocks [1]
[1] https://www.google.com/search?q=barcelona+superblocks&rlz=1C...