Are you really saying we're seeing more old people with mild outcomes vs young people with mild outcomes? Just want to be clear here ...The Trump example was to illustrate that we are seeing more older people having mild outcomes then we are seeing bad outcomes. We always have.
And of course there is no way to directly prove what percentage is a bigger factor. However, all health guidelines state that high risk people (old and/or with health issues) should take extra precautions. Obviously the hospital/death numbers support that the high risk group health factors play a very significant role. But, correct me if I'm wrong here, you want me to believe that all the high risk group got a larger initial dose and that is what is making it worse for them?Although there are differences in the health of each person, that kind of difference in outcomes is better explained by the differences in initial dosage of infection, then the health status of each before infection.