the current state of things is, roads get all the money and transit and bike infra get scraps and are poorly run (so are FDOT road projects too btw)
no one disputes that?
what is being advocated is increasing trirail frequency, implementing an actual network of segregated greenways and expanding metrorail
you're saying "oh we can't do that"
but like, yes, we can? I promise you, if you send out construction crews to apply green paint and put down curbs for greenways, there's no natural law of the universe that would make the paint not come out
and once it's in place, there's nothing preventing millions of Miami residents from using them the same way they're being used in NYC, Montreal, Barcelona etc etc instead of having to get in the car for literally every single trip and errand
likewise if you procure trains there's no magic wall that prevents them from crossing into the state of Florida etc etc
these things are trivially achievable, but misinformed policymakers and voters alike think adding more roads is somehow not costing any money (it costs way more) and will fix traffic (it won't)