For the sake of reason I defend Hovind, his degree and consequently the law that confers legitimacy to it.
This is the fundmental mistake you are making.
Laws do not confer legitimacy upon degrees. If the state legislature saw fit to confer a medical licence upon my cat, that would not make my cat competent to practice surgery.
Reason demands that if you accept some legal authority you can't with a clear conscience dismiss others.
Quite the contrary. Reason demands that legal authority based on reason and evidence should be respected, but it's perfectly legitimate to reject legal "authority" based on nothing of the sort.
The authority or rule of law is precisely what makes Hovind's degree legitimate.
No. The authority is what makes Hovind's degree
legal. But the law cannot make it legitimate.
In particular -- among my other duties is the service upon search committees for my school. If "Dr" Hovind were to apply for a job here, we would not consider his application, because he does not have a
legitimate degree. In fact, even if he had a "legitimate" (and accredited) degree, we would still be likely not to consider his application
because he also has a fraudulent, illegitimate degree from a diploma mill, and therefore is a liar, cheat, and scoundrel. The State of Colorado cannot "legitimate" the degree nor can it make him not a liar, cheat, and scoundrel.