The name of the article is a bit misleading and there are some points of logic that seem misleading with intent. The gist: The article first states that creatine is used for high intensity activities, true and that caffeine in itself augments muscle contraction, true.
Then it goes on to say that the combination of the two, caffeine and creatine may have negative effects on muscle relaxation....
Who the fak takes creatine and/or caffeine for enhanced muscle relaxation? It technically states "muscle relaxation time," but doesn't indicate by how much, 1 second? .5 second? 10 min? The most bogus thing about this article or "research," are a lack of references. It sounds like someone hand picked particular facts involving creatine and caffeine and cut & pasted them willy-nilly to deliver a particular message.
Also, you can't bold & copy anywhere on that article, which is kind of shady and a pain when I was trying to fact check.
To play devil's advocate, even if the combination of caffeine and creatine created a less then optimal syngergy and I mean a big "IF," to say it "destroys" creatine is laughable. The foundational use of creatine is for powerful muscle contractions via the continuous & revolving breakdown of ATP from the increased creatine stores. The base really being the augmented breaking down of ATP and by their own admittance, caffeine is a muscle contraction enhancer, which is fueled by ATP, then the prime reason we all take creatine, for powerful muscle contractions, still stands even if the point they're trying to make were true.
There are better ways to achieve maximal muscle relaxation out there, so I don't recommend creatine and caffeine if that's your goal. I'm not saying I'm 100% right, but I know 100% that caffeine doesn't "destroy" the benefits of creatine, at least not the benefits people use it for.