The people who say "I had all the vaccines when I was young" as if it proves they're not antivaxers are confusing. At best it shows their parents weren't anti vaccination when they were a child.
People who decline Flu or COVID vaccinations risk themselves and that's fine. Nearly always stupid, but fine.
But what about other 'optional' vaccines like the HPV vaccine for their children? That jab is absurdly good at preventing a common type of cervical cancer, but if you're 'sceptical' of vaccines then you might choose to not have your daughter vaccinated or to delay it. Both of which are objectively more dangerous health choices.
When someone says 'im not antivax but...' i find it means more that they don't like to be associated with antivaxers than anything about if they're more or less likely to get a flu shot.