Don't know much about history
Don't know much biology
Mutations are just random variations in the genetic code that occur when it is replicated. The mutations that prosper are the ones that offer some advantage in survival and reproduction. The more the virus is spreading, the more mutations will occur, and the more the likelihood that some will be harmful. That is why the problematic mutations are originating from poor countries where vaccination rates are low (the latest one from Southern Africa). If your hypothesis was correct, they would be originating mainly from countries with high vaccination rates.
As for your other claim, the latest data show that unvaccinated people are nearly 6 times more likely to be infected than fully-vaccinated people, and 14 times more likely to die.
https://covid.cdc.gov/covid-data-tra...vaccine-status
But why look anything up when you can just invent some shit in your own mind. You really are a determined idiot.