Maybe this is a sign of advancing age and I shouldn't let it irritate me.... (But it does anyway..)
When popular misconception gets repeated long and often enough by the ignorant, it eventually becomes accepted truth.
For example, the Great War of 1914 - 1918 was not the first "World War" by any yardstick you might wish to compare various armed conflicts by. "World War I" was a term invented after the fact by journalists, and repeated long and often enough that it became accepted truth. Today if you even suggest otherwise, (Especially to a JW) it will take a good, hard "nose rubbing" in a history book to settle the argument that ensues.
Here's an example from where I live:
In the desert southwest, the wind shifts in mid to late Summer and starts blowing up from the South. This seasonal shift in the wind is called the "monsoon."
This southerly wind also brings moisture that manifests itself in especially violent thunderstorms. People, especially those that have moved in from other areas often mistakenly call the thunderstorms themselves, "Monsoons."
For example, someone will say to you at work: "Did you get any rain from that monsoon last night? Our streets were flooded!" Responding by saying, "The Monsoon is a season, you Dolt!" isn't exactly the best way to greet a workmate who is only trying to be friendly. --Besides, the meaning of the word is slowly shifting as more and more accept and repeat the incorrect usage.
Eventually what is incorrect will become what is correct.
Is anyone else irritated by this phenomenon, or is this just the complaint of a grumpy old curmudgeon?