30% hospitalized being vaccinated in a place with 65% vaccinated suggests that the vaccines are 77% effective against needing hospitalization.
But also, note that another page you posted ( Vaccine reluctance & General COVID Discussion - #4400 by taverngirl ) mentions that, out of hospitalized patients, vaccinated patients are more likely to have mild or asymptomatic cases (found to have COVID-19 after being hospitalized for other reasons).