Most likely because the news is in English. And why would Natrium be better on an international forum?
It is Sodium in most Latin languages (despite Natrium being Latin), in Hindi and in Arabic. And Chinese has a different root. Among the 10 most spoken languages (according to Wikipedia), only Russian is using Natrium.
Sodium is imprecise, as it can mean simply salt (NaCl), or it can mean Natrium (Na).
AFAIK there's a reason the symbol is Na. And that's because the internationally accepted scientific name is Natrium.
It's not only Russian that uses Natrium, Scandinavia and German language do too.
Apparently the term Sodium is from Arab. I admit I thought it was like Pineapple, which only exist in English, sounding like a fruit from cold northern pine-apple trees. 😋
I’m a PhD candidate in chemistry. I’ve never once seen sodium refer to the salt, sodium chloride. Sodium is the metallic form or the atom.
However, why sodium, tungsten, lead, antimony, tin, silver, gold, mercury, iron, and potassium and not their Latin forms? Natrium, wolfram, plumbum, stibium, stannum, argentum, aurum, hydrargyrum, Ferrum and kalium? I don’t really know. Mostly it’s just fun trivia for me to tell the undergrads.
I always said salt, of sodium chloride for NaCl. Who is using sodium for table salt? The only time I heard that associated was when saying that table salt is a source of sodium, which is true.