Earlier quoted context omitted.
does it really matter, if even a mild reinfection increases your risk of so many diseases and death?
It does matter whether the science is misprepresented, causing irrational anxiety in people, which also increases your risk of "so many diseases and death". Respiratory infections generally increase your risk for various pathologies, but so does staying indoors in fear, not getting exercise and avoiding social contact.
I find it a lot more fruitful to elaborate why the data doesnt support those conclusions. This way we dont risk slipping down this slope and instead actually help each other fix our errors.