What yer missed is what I think is an important detail - The age spread of critical patients is now younger.
Although, what is now showing up with the reduced critical care patient numbers that are claimed to be due to the increased vaccine rates may also be due to the reduced nocebo effect. If yer ‘believe’ the vaccine works, then it works..🤔
If you believe wikipedia...
“A nocebo effect is said to occur when negative expectations of the patient regarding a treatment cause the treatment to have a more negative effect than it otherwise would have. For example, when a patient anticipates a side effect of a medication, they can suffer that effect even if the "medication" is actually an inert substance. The complementary concept, the placebo effect, is said to occur when positive expectations improve an outcome. Both placebo and nocebo effects are presumably psychogenic, but they can induce measurable changes in the body. One article that reviewed 31 studies on nocebo effects reported a wide range of symptoms that could manifest as nocebo effects including nausea, stomach pains, itching, bloating, depression, sleep problems, loss of appetite, sexual dysfunction and severe hypotension.”
https://en.m.wikipedia.org/wiki/Nocebo