Increasing vaccination in the population overall reduces the velocity of spread and reduces the likelihood that an immunocompromised person will have the opportunity to have one of those long-term infections that create variants. It also gives the world time to create therapeutics that might be able to treat immunocompromised individuals with Covid and do the same. It’s not only about individual protection.

Pretty much everyone will be exposed soon regardless of what we do.

https://www.medpagetoday.com/opinion/vinay-prasad/94646

“ Over the next decade, give or take a few years, every single person on earth has a date with this virus. We will all be exposed, and the virus might replicate in some of our respiratory mucosa.”

Exposed, not infected, though even if they did say infected, a 10 year timespan is better than a 2 year timespan.