Also, the whole argument that these vaccines "decrease the severity of symptoms", always struck me as something unscientific that cannot even be quantifiably measured. For if a vaccinated person gets covid and has relatively mild symptoms, one cannot make a definitive comparison to what that experience would have been like if they caught covid and weren't vaccinated.

For plenty of unvaccinated persons contract covid and experience relatively mild symptoms that would be of the exact same magnitude or even less severe.