Suggest you do some more research on what is and isn't profit driven bullshit. Just follow the money in every case. Vaccinations, at least the ones we devloped in the West for covid, started out as something singular, for the benefit of humanity, and it would have been, if it had stayed as that, but it became just another fragmented competitive instrument of making profit. If you think it was about you, think again, it was about profit.

On whether or not it stopped a person transmitting to the unvaccinated, note that it did not address the presence of the virus in a person, only the symptoms. So the person with no symptoms then could mix with the unvaccinated, and the unvaccinated would see no symptons, therefore take no special precautions around the vaccinated carrier. How did that help to prevent the vaccinated from infecting the unvaccinated?

Btw, don't believe the population is on decline, that is what the utilities energy companies and averyone associated with them want to believe, and us all to believe, because their business is dying due to solar, population growth is and will continue, just on a different source of energy, one that doesn't come from, or at the expense of Earth.