Just because someone is unvaxxed does not mean they are a danger.

Hospital admission stats show they are more likely to wind up there than vaccinated people. Here are the figures for some Ontario hospitals: https://covid-19.ontario.ca/data October 25, 2021

Natural immunity is better than vax "immunity."

In order to get natural immunity you have to survive covid first.Some people don't, some take a long time to recover, and others do not - so far - fully recover.

And if too many people get covid then the hospitals are overrun and people with "regular" health issues have their treatment delayed.

Vaccinated people may be asymptomatic spreaders.

“The data accumulating shows that you can spread [the coronavirus after being vaccinated], no doubt,” Dr. William Schaffner, an infectious disease specialist at Vanderbilt University in Tennessee, told Healthline, “but less so and for a shorter time.” https://www.healthline.com/health-news/vaccinated-people-may-be-even-less-likely-to-transmit-covid-19-than-previously-thought October 18, 2021