I appreciate the author's fervor, and they are at least right about not stopping at healthcare and instead recognizing the not-coincidentally similar harm that's done to many (all?) systems and institutions, but they make the all-too-common mistake of placing the blame for that harm on a set of tools used by the people who do that harm rather than on the people themselves, and much more broadly and to the point, on the mechanisms and presumptions by which some relatively small number of people can and inevitably do accumulate enough authority that they can, using whatever tools might be available to them, further their own shallow self-interest by bringing harm to others.
As long as we continue to simply swap out one set of people or one set of tools for another while leaving all of those mechanisms and presumptions in place, we'll continue duplicating the overarching problem, with the only meaningful distinctions between one instance and another being the specific people involved and the specific tools used.
To get out of that trap, we have to revisit - and reshape - the mechanisms and presumptions by which we make it possible, and thus inevitable, that some will gain the power by which to act to further their own shallow self-interest by harming others.
To borrow the author's analogy, the process doesn't go wrong when the person who comes into your house starts beating people, but the instant they presume the right to come into your house in the first place. More precisely, the process goes wrong because we as a species nearly universally simply presume that someone should or even must be granted that (figurative) right and the authority to exercise it, then we foolishly and obviously irrationally believe that they'll choose to exercise it for our own and society's benefit rather than their own, and/or that we'll be able to prevent them from choosing otherwise.
Or much more simply and directly - the real problem is the entire concept of institutionalized authority - not simply who happens to hold that authority in a given time and place or which tools they use when they inevitably abuse it.