A cornell medical college prof on cbs said that federal data shows that covid occurs more in those boostered because these people increase their risk factors since they feel they're more protected than they actually are. any advice to the boostered?

Vaccinations and boosters do not decrease your chances of contracting COVID... they decrease your chances of hospitalization and death from the complications of COVID. CDC guidelines to help prevent COVID: https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/prevention.html#:~:text=In%20addition%20to%20basic%20health,for%20COVID%2D19%20If%20Needed

The way I read it is that people that are vaccinated and boosted tend to rely on the vaccine and may expose themselves more than people that are unvaccinated or boosted making them prone to get the infection as the vaccine is not protecting against getting the infection. The advise is to keep using the mask and avoiding crowds even for boostered.