COVID-19 really is a benign virus, as far a viruses go. I don't agree with the rest of that statement, but its effects on people infected are absolutely mild when compared to some other viruses: Polio, HIV and Ebola have much worse effects.
Other viruses that we control for with vaccination regularly have much more severe long-term effects than we now know from COVID, like causing birth defects (Rubella), deafness (Mumps), immunocompromization (Measles) or cancer (HPV).
Other viruses that we control for with vaccination regularly have much more severe long-term effects than we now know from COVID, like causing birth defects (Rubella), deafness (Mumps), immunocompromization (Measles) or cancer (HPV).