They call aluminium 'aluminum'. That's easier to say, I admit = one less syllable. Though it smacks of laziness too like your sulfur example. I suggest we all let them get on with it. We can carry on with our sulphur and aluminium as usual and pretend we agree. I will get a thrill of subversiveness in crossing any new spellings out on the pots at work and rewriting them.

Is this some sort of 'issue' RT News[russian tv] has told you to be upset about again?

“In 12th-century Anglo-French, it was sulfre; in the 14th century the Latin ph was restored, for sulphre; and by the 15th century the full Latin spelling was restored, for sulfur, sulphur. The parallel f~ph spellings continued in Britain until the 19th century, when the word was standardized as sulphur. Sulfur was the form chosen in the United States, whereas Canada uses both. The IUPAC adopted the spelling sulfur in 1990, as did the Nomenclature Committee of the Royal Society of Chemistry in 1992, restoring the spelling sulfur to Britain. Oxford Dictionaries note that "in chemistry and other technical uses … the -f- spelling is now the standard form for this and related words in British as well as US contexts, and is increasingly used in general contexts as well.” (Source Wikipedia).

So, the spelling and etymology of the word has an interesting and chequered history, with the ‘f’ spelling of the word (as in sufre) being in use for several hundred years. Hardly a new or ‘lazy’ adoption, especially as the International Union of Pure and Applied Chemistry and the Nomenclature Committee of the Royal Society of Chemistry adopted the sulfur spelling in 1990 and 1992 respectfully.

The spellings for aluminium and aluminum also have an interesting history (and the latter is neither a new nor a lazy option either). It might also be worth noting that American English has preserved many old English words and phrases which have disappeared from 'British' English. Google ‘Appalachian English’ if you're interested.

Trivia alert: The 1893 statue of Eros (actually it’s a statue of Anteros) in Piccadilly Circus, London was the first statue in the world to be cast in aluminium/aluminum.