According to the CDC's most recent data unvaccinated individuals are 11 times more likely to require hospitalization. This is after the Delta variant*. https://covid.cdc.gov/covid-data-tracker/#covidnet-hospitali....
Also see this data from Minnesota which is very recent. https://www.health.state.mn.us/diseases/coronavirus/stats/vb...
Anecdotal articles I read reinforce this. The worst I've heard is that 30%-40% of patients in various hospitals are vaccinated. Which sounds bad, except these numbers are in places where 80%-90% of the adult population is vaccinated, so 10% is taking up two-thirds of hospital space. Additionally, most of the people who are hospitalized and vaccinated are older individuals, and they still typically spend less time and recover better than unvaccinated younger individuals.
* There was a recent article, "Hospitalizations Rising Among Fully Vaccinated in US, Fauci says", which speculates that this data is outdated. But it publishes no statistics to back up this claim. Frankly this is kind of misleading: of course vaccine efficacy wanes, the question is whether it's enough to make a significant impact. Even then, you can bring back efficacy with a booster. https://www.nbcnews.com/health/health-news/hospitalizations-...