"We" in GP was the previous generation, not a nefarious evil cadre. The prior generations followed jobs to highly desireable areas, affordable only because they had the expertise and education to get the high paying job in the first place. Every person that moves there lifts the ladder a little higher behind them just due to market factors.
I feel that only works so long. Without new emerging areas offering high wages and decent cost of living, the new grads look at the old areas like SF (no hate just e.g.) and see a financial bridge too far and a tight job market anyway.
The only reason SF seems inaccessible is that the prior generation down zoned and said "no more housing here, we don't want growth." Which worked out well for them but robs young people and immigrants of climbing the same ladder they climbed.
Building new clusters of expertise and economic opportunity is extremely hard, nearly impossible, everybody has been trying to replicate the Bay Area's tech success for decades and even with the housing problems it simply hasn't happened anywhere else.
It's far easier to remove the law on the books banning housing than it is to build an ecosystem of any economy from scratch in a new area.
We don't need any new cities, we need to allow existing areas to grow. If every city blocks housing, then even that new area is going to be blocked from growing as it grows.
We must stop everybody in their tracks that thinks it says "I don't want new housing or neighbors near me" because that is the literally robbing of our young people and of society of opportunity.