A party is a private affair. Are you not supporting freedom of association? Or should the gov’t tell private organizations how to nominate their candidate?
If you don’t like it start your own party and see how that works for you.
A caucus can have rules and still be morally wrong.
Completely disregarding the people of Colorado who you are supposed to represent is morally wrong.
You are morally wrong for defending it.
End of story.
(And as an aside, if we DID form a third party, you’d whine that we were giving the election to Hillary.)