Mutations are happening all the time anyway, but the rate of mutation matters. This is all one big game of statistics. Plagues end quickly all the time once co

Mutations are happening all the time anyway, but the rate of mutation matters. This is all one big game of statistics. Plagues end quickly all the time once conditions are no longer able to support it. Take a look at the current mouse plague in eastern Australia right now for a real world example. It's happened before but each time it collapsed as quickly as it came. Statistically we will cross the threshold where the ecosystem is no longer favorable for the spread of covid and the plague will collapse. It will move back into the background noise just like the millions of other potential diseases that aren't currently causing a global pandemic. The real danger are holdouts who can't or refuse to get vaccinated for whatever reason. If there's enough of them and they live close enough together to support a viable ecosystem that very well could provide a reservoir for covid to continue thriving and causing problems until they achieve herd immunity.