As how to pronounce the word Aluminium (spelled according to my Merriam-Webster dictionary app).
There was once a brash American visiting London and was checking into a posh hotel. The desk clerk gave him his key and told him, “Sir, your room is on the fourth floor, you will find the lift around the corner.”
“The what?” Asked the American. “The lift,” replied the desk clerk, “to take you up to your room.”
“Oh,” replied the American, “You mean the elevator.”
“Here we refer to it as a lift, sir,” replied the clerk.
“Well we invented the consarned thing, and we call it an elevator.” Said the American.
“We invented the language, and we call it a lift.” Replied the clerk.
Since the language we speak is called English, because they invented it, then they should have priority on how words should be pronounced.