As far as I know none of them have been deployed to Ukraine. They probably require specialized personnel to run so even if they did want to send them there the Ukraine government would have to send specialists off to training first. Plus, it seems like the Patriots are working better than expected, even shooting down "hypersonic" missiles, much to the embarrassment of the Russian military.
I think this article has somewhat fallen into the imagined capabilities trap that US arms manufacturers were constantly in during the Cold War. They would see Soviet propaganda about their new invincible weapons system and do some math on what it would take to make it work and then try to design systems to counter that paper exercise. Then they get a sample of the real thing and it turns out the Soviets were outright lying about the capabilities and the counter they developed is ridiculous overkill.
I think this article has somewhat fallen into the imagined capabilities trap that US arms manufacturers were constantly in during the Cold War. They would see Soviet propaganda about their new invincible weapons system and do some math on what it would take to make it work and then try to design systems to counter that paper exercise. Then they get a sample of the real thing and it turns out the Soviets were outright lying about the capabilities and the counter they developed is ridiculous overkill.