Refusing to get vaxed has nothing to do with the ability of one or the other spreading an infection they have ingested. One may not get as sick, theoretically.....yet many unvaxed get over it rather well. I happen to know several, three right off hand and one has serious morbidities. We all know who are more susceptible by now.Ignoring the possibility the person refusing the vaccine is also refusing to wear a mask.
The mask thing is a panacea.