"Cuban Americans are a big Republican voting group and the GOP caters to them, but you don't typically get people accusing the Republican Party of catering to Cubans as a tactic to divide white voters. "
Both parties in the US use identity politics and divide&conquer tactics to get votes, just so they come to power and then benefit their (rich) donors: Billionaires and big corporations.
"There is no infinite demand for housing because population growth is not infinite. The entire population of the Earth is not moving to America."
We know that due to migration (as birthrates are below replacement levels) the US has grown from 210 to 332 million in 50 years. That's a factor of 1.58. Even if we assume the same growth rate, you'd have 524 million in 50 years (so an increase by 192 million). Is your "not skyscraper" upzoning enough to house another 192 million? Don't forget that migrants typically move to big cities.
As you seem to be fond of Paris, let's take it for this example. Paris has a population of 2.161 million, so you'd need to build 88 Paris in the US in the next 50 years. Good luck with that.
(Also your polls showed support for duplexes up to sixplexes. That's far less dense than the 5-story vision that you have.)
"American birth rates are above replacement rate, and even if they were below replacement rate, population growth would still continue for a while because of new generations being born."
US birthrates are below replacement levels. Look it up. The last time it was above the 2.1 births per woman (i.e. replacement level) was in 1972. 50 Years ago. https://www.macrotrends.net/countries/USA/united-states/fertility-rate
"population growth would still continue for a while because of new generations being born."
That's not how it works. If you have below replacement level birthrates the population will decline without external influence.
"Who are really the tyrants?"
If you were in charge, I'm pretty sure you'd be a tyrant as you operate based on
- ignorance (e.g. misunderstanding of replacement levels as a concept, and not knowing that US is below replacement level for 50 years),
- tunnel vision (e.g. blaming a very big, complex problem on a certain group of people. Completely dismissing other factors and solutions.)
- dishonesty (e.g. using a poll that supports duplexes to sixplexes, as support for 5-story downtown apartment blocks)
- and quite frankly malice (as you blame NIMBYs (just regular people, who are happy with the state of the community they are living in) for housing prices. And you sound very, very, very angry at them.)
I would never vote for you - as long as you have that kind of worldview. Have you even calculated it out? How much cost will your "88 Paris in 50 years" plan have? How many roads will you have to widen? How much infrastructure do you have to upgrade? Is infrastructure even upgradeable to that degree? What about services? What kind of economy will fuel all of that(can't be services as they are just internal circulation)?Are there even enough natural resources to fuel your vision of so much more upgrading? How do you avoid intensifying e.g. water shortages? What about energy?
Have you even looked at other places where some massive building spree has been done in the recent past? Have you looked at China and how their construction&housing industry do now after they were doing that kind of construction spree?
I think it is good that you want to improve the world, but I think you should expand the breadth of problems which you are considering and tackle the issues with a more holistic approach. Society is very, very complex and we had enough social engineers and tunnel-visionaries trying to do heavy handed improvements to one thing, which caused a bunch of other problems simply due to "unforeseeable" (i.e. dismissed) consequences.
Try to expand your knowledge in all directions. Always(!) listen to constructive criticism against your current positions. Always ask yourself: What are the underlying causes of the problems. Sometimes it might be sufficient to solve these underlying causes.