There are a significant amount of breakthrough cases occurring unless you haven't been paying attention. And by "breakthrough", I mean people getting it who were fully vaxxed. They may not be hospitalized but they can still be sick for a week and we are going to try to prevent everyone from getting sick from it.
Vaccination status matters for the severity. But maybe not for just getting the illness right now.
Having said all this, I had COVID a month ago and was fully vaxxed and I was definitely sick for at least a week. Same thing happened to the friend sitting next to me, also fully vaxxed. Before I realized I had it, I passed it onto my parents who were also fully vaxxed. Dad ended up in the hospital for a few days. Mom had severe flu like symptoms but recovered. Both also received the "transfusion" after being confirmed positive.
This is going to affect a signficant percantage of our population.