Keep in mind that many ideas that sounded very good turned out to be very bad.
Total stagnation is not the answer either, but we need to strike a balance. Testing things on a smaller scale first is a good best practice, even if it means most of us will miss out on the "obvious" perceived benefits for a while.
Testing out not ramming highways through cities? Or testing out ramming highways through cities? The thing is that there were and have always been many voices screaming that the destruction of their communities was a bad thing, but in many (not all) the highways got rammed through anyway.
There's little parallel with what is happening today unless you can point to something specific. This feels kind of like a "beware government" post, but I'm unclear on how that is actionable policy. Resist all government isn't a viable option either.
