And also what you linked to was an opinion piece...that was that author’s opinion. An opinion can be totally whacky and idiotic but they still have a right to express it without fear of legal retribution. Now, retribution by response opinion to their opinions, that’s fair game.
A lie is a lie is a lie.... opinion or not. IF one knowingly tells a lie, and hides under an 'opinion', when the truth is easily demonstrative I have no problem filing a libel suit.