The primary issue causing that we keep having to lockdown is that hospitals only have a limited number of ICU beds (not physical but trained staff to operate them). Once full, all others such as traffic accident victims can't be treated. There is no way to quickly get more certified ICU beds at least if you want them at the standards expected.
71% of people in the ICU in Zürich, Switzerland are unvaccinated [1]. This is a pandemic of the unvaccinated even if the vaccinated can spread the virus, the ICU beds are full because of the unvaccinated.
[1] https://www.zh.ch/content/dam/zhweb/bilder-dokumente/themen/...