I am absolutely in favor of vaccination, but these numbers are absolutely meaningless without context. You could also write "96% of all vaccinated people will drink or eat something that they like during the next 3 days.". That would have a similar amount of meaningfulness.
The U.S. had the highest number of infected people on Jan. 24, with ~9 million active cases. Hospitalizations on January 24, including the previous
four weeks, totaled around ~430,000. This means that the hospitalization rate was
4.8%. This is a simplified calculation, but even if you add one or two percent and exaggerate, take other time periods or so, it doesn't really change much. The figures are available for everyone to see. Anyone can check them (
https://covid.cdc.gov/covid-data-tracker/#hospitalizations or
https://www.worldometers.info/coronavirus/country/us/ ...and a lot more).
Of course, vaccination also protects against infection per se and it's only about the delta variant, but hospitalizations are certainly anything but a good benchmark...without any meaningful context.