Given there are 24 vaccines made by competing businesses authorised by the regulatory bodies of multiple independent nations that don’t all like each other (e.g. America vs. Cuba, North Korea, Afghanistan; or Israel vs. Iran), given that almost no nation has an incentive to plan its own depopulation and in many cases nations are actively trying to boost childbirth rates, given that many other vaccines are already basically universal, given that COVID-19 symptoms include lower fertility, given that nations have not even yet managed to make binding agreements on limiting carbon emissions even though this started to be a big thing 30 years ago and the consequences of failure will affect everyone?
I think the simplest model which fits all that would be to start by demonstrating that I am the star of The Truman Show — there is neither the means, the motive, nor the opportunity for what you suggest in anything resembling the world we actually live in.