They can still spread it if they are vaccinated. This is not disputed by Fauci or the vaccine makers.
You are missing the main point of vaccines, since you insist on keeping the blinders on.
And for your benefit, if 100% of population gets vaccinated, the death rate plummets to near zero. If one is vaccinated, can still get infected, that is true. And can also pass it on, that is also true. But it matters little, since vaccinated person is least likely to die from covid.
If mortality rate is near zero, covid-19 has been defeated for all practical purposes.