The meaning of the abbreviation is completely unnecessary as long as people realize what it is referencing. It's irrelevant whether Wi-Fi is short for "wireless fidelity" as long as everyone realizes it describes a wireless networking technology. Most people I know think DVD stands for "digital video disc," but the V is actually short for "versatile." Does that mean they don't know what a DVD is? BD is the accepted abbreviation for Blu-ray, but that doesn't mean that people who use BR don't know what the technology is. It's a semantic debate, and it's largely meaningless.
That said, if someone factually states that "Wi-Fi" stands for "wireless fidelity," it is worth pointing out that the history of the term does not back up that factual claim. We all know what Wi-Fi is and what it refers to; misrepresenting the history of the abbreviation in a matter-of-fact way doesn't change anything. Ultimately, it's a trivial point.
But yes, someone probably should tell those various publications that "wireless fidelity" has fallen out of favor. Doesn't anyone do any fact-checking any more?