Absolute nonsense though, as proven by looking at literally any of the diseases we have been vaccinating people for decades. Polio vaccine hasn't caused super polio to emerge, just like vaccines haven't caused super variants of hepatitis B, tetanus or whooping cough - all things that children are vaccinated against.
Even the flu vaccine doesn't cause new variants, and that has a spotty coverage at best.
Like, what you said sounds scienc-y enough that a lot of people seem to believe it, but it's literally not true and has never been true.
You are comparing apples and oranges. It is this reason there has never been a successful corona virus vaccine despite decades and billions of dollars of research.
Even the flu vaccine doesn't cause new variants, and that has a spotty coverage at best.
Like, what you said sounds scienc-y enough that a lot of people seem to believe it, but it's literally not true and has never been true.