moreover serious illness after reinfection is virtually unheard of after symptomatic infection.
I'm 99.9% certain I got Covid in February of 2020. Never had a fever in my adult life of 103.5 for two days straight. Haven't had an issue since but it sure as hell doesn't mean I'm not going to continue to take preventative steps to keep my immune system as healthy as possible.
And I think your post (especially the point I'm quoting) is spot on.