You have a valid point, but hospital beds are still a finite resource. So in that sense, yeah, it is selfish to not get vaccinated in the absence of other mitigating factors, since vaccination prevents hospitalization in a large majority of cases.
What's beyond evil is demonizing any treatment other than vaccination - but that's still going on even today, as evidenced by posts like yours.
I got COVID and was (and still am) unvaccinated, yet I did not get anywhere near a hospital; and that is what happened to just about anyone who wasn't in one of the well known and well understood risk groups.
Treating everyone the same instead of focusing on those most at risk was and still is particularly dumb, but here we are with people like you still making completely baseless claims that are certainly not backed by any actual medical science.
Before baselessly judging everyone else as selfish you might want to spend more time looking in a mirror.
Hospital beds are not an unlimited resource, and there are plenty of other conditions apart from covid that may also require hospitalization.
I genuinely fail to see what is unreasonable, selfish or factually wrong about any of the above statements.
Differently put, i am having a hard time calling healthy teenagers selfish if nobody thinks about calling anyone with a still obese BMI after 2 years the same. Because to be perfectly blunt, looking at the numbers the later is a lot bigger of a problem then the former.
edit: In case anyone is skeptical about the giant impact obesity has, here the CDC numbers from last year https://www.cdc.gov/pcd/issues/2021/pdf/21_0123.pdf Figure 1 has leading underlying medical conditions. Hypertension, Lipid metabolism (cholesterol), obesity itself, diabetes and coronary atherosclerosis being the first 5. Table 1 has the numbers of hospitalized. ~95% had two or more on the list.