You expect people to form a socialized immunity to a virus that mutates in every population, with multiple know strains, and a viral structure that is already generally resistant to human and animal immune systems?

I expect people to get immunity from this one variant of the coronavirus and some mutations with enough similarity to it. I don't expect them to suddenly be immune from all coronaviruses.

but that doesn't mean it isn't still harmful nor that it cannot suddenly become deadly through mutation.

The harm the virus does pales in comparison to the harm we are doing in reacting to it.. And the idea that a virus can mutate to a form more deadly is true of any virus; I'm not sure what you're trying to say here.