I guess I can share my anecdotal experience, but my family just had their run-in with COVID. The only person in the house not vaccinated (my youngest daughter, too young for the shot) was the only one to show symptoms. I never actually tested positive, and the other two people in the house were vaccinated and showed no symptoms despite testing positive.
None of this is relevant to anything but since anti-vaxx nerds keep coming in here and going “I caught COVID and just had a mild cold for a week!” I figured I’d tell my story of a vaccinated family getting COVID and literally not showing any symptoms at all.
Edit: I had just gotten my booster a week prior, which is likely why I never got it.