I dug out a more accurate number, 93.6%, from the Washington dashboard. Even at 93.6%, the remaining 6.4% unvaccinated can't overwhelmingly account for hospitalizations even if they are being hospitalized at 7x the rate.
edit: According to the dashboard, 59.5% of people in the hospital with covid like illness are 60+. That's vaccinated and and unvaccinated combined. We can definitively say that the hospital case load is not overwhelmingly dominated by the elderly unvaccinated.
60% is the number for 60+, unvaccinated and 60+ vaccinated. The claim was the 65+ unvaccinated alone were dominating. Can't be true given the numbers. Specifically the claim was "overwhelmingly, screamingly, massively dominated by the elderly unvaccinated".
https://www.doh.wa.gov/Emergencies/COVID19/DataDashboard
edit: According to the dashboard, 59.5% of people in the hospital with covid like illness are 60+. That's vaccinated and and unvaccinated combined. We can definitively say that the hospital case load is not overwhelmingly dominated by the elderly unvaccinated.