I see HM's point as a dramatic example of the extremes. Kinda like those memes that compare the least attractive people on the Left to the most attractive people on the Right. Neither sample is intended to be comprehensive, nor even a representative sample. The examples are selected for dramatic effect.
It doesn't change the "truth" of the statement - those people are either Left/Right unattractive/attractive. It is also a relatively accurate, if narrow, reflection in the evolution of rhetoric around the health care debate.
If conservatives are saying, **** old people, I stand corrected. I don't think that's what they're saying. I see this as a line where there are opposing actions/consequences and there are people forming dichotomous sides, who pick common points along the continuum. So one side is saying, why make everyone comply with something that they don't believe is effective anyway, when it should be on the individuals to take their own precautions. And there are some logical problems with that which are fair to point out. And then the other side of the dichotomy is the people who say let's wear masks, or shut things down, or whatever, so that we stop the spread;it's the right thing to do. And there are some logical problems with that too.
I think both points are reasonable to hold given the facts we know. I don't think either side has a valid reason to club the other, or mob shame. But I don't believe it's reasonable to force government mandates.