You’re fond of that phrase “You do not understand”. What the Bible says is not dependent on my understanding or lack thereof, happily, or your tendency to put words in my mouth.
"Since “righteous” means to be without sin, that goes against the Bible, which says that there is nobody that does not sin except Christ ".
That's an absurd point to make for this article, when everyone (but you evidently) understands and uses the meaning of the word, as used, in this article, and dozens of times in the Bible in the same way.