>the disease is far less effective spreading, either for not be able to infect as much people, or people not being severely impacted and being less contagious and for less time.

This idea doesn't mix well with Covid's very high rate of asymptomatic cases (which may be even higher among the vaccinated).

>A saturated health system may not be available for you if you i.e. have an accident.

At least where I live (Wales, UK), asking citizens to avoid healthcare for several years to "Save the NHS" has resulted in an ongoing health crisis of unprecedented proportions.