Le Corbusier's clusters of towering skyscrapers aren't really a good solutuion either. They were implemented in Glasgow with disastrous results[1].

My (limited) opinion, is that auto-centric opponents want dense, walkable, cyclable cities. That doesn't imply towering skyscrapers, six stories of apartments with mixed retail, office, and light industry are sufficient. That should provide enough density to make public transit a viable option, if road space is reclaimed from cars.

[1] https://www.theguardian.com/cities/2019/oct/16/urban-living-...