This is how he rationalizes initiating force on others. He is literally claiming that not doing something he thinks you “should” do is just as bad as actively invoking harm to someone…therefore he has the right to use force on you…because by not doing something he considers would make you a good, moral person, you are in fact made a bad or evil person. Therefore, he (as a good, moral person) has the right to force you to do what he thinks is good and moral…to force you to bend to his will…because he is good and you are evil.
I would hope the danger of this kind of reasoning would be evident to anyone. Suppose my religion says it is “good and moral” to convert everyone to my religion, and kill everyone who did not submit to my god. By his rationale I and my fellow cohorts could torture him until he agreed to prostrate himself before the alter of the flying spaghetti monster. And if we didn’t like the way he did it, we could…nay…must cut his fucking head off.
The problem with this entire line of reasoning is that it does not allow for universality…that is, universal implementation. The reality is you can choose what is good and moral all you want. You can say it is immoral to eat meat on Friday. You can say it is immoral for a woman to go through her period. You can judge people for doing those things all you want. You can refuse to associate with them, to do business with them, or to even talk to them. You can say they are going to hell, you can say that they will burn for all eternity for being unclean (dirty females and their ovulation). But the minute you say you have a right to force me to be (what you consider) “moral”, you are stepping into the realm of one person being superior to another…in essence, slavery.
Hoppe explores this in his “argumentation ethics”. And while many have criticized the solidity of some of the parts of the argument he makes, and there isn’t really one single place where Hoppe has outlined the theory, check here for some resources on it. I know for a fact the “Law and Economics” lecture from 2005 talks about this specifically.