Disagreeing with general consensus โ wrong
An entire country being contrary just because of national pride and arrogance is completely different.
Is it your position that all countries should have the same language regardless of their cultural history?
Also, it isn't rooted in national pride or arrogance. Aluminum came first and was the name given by the first chemist - a British scientist - to isolate the metal. The variant aluminium came from a reviewer who changed the spelling just because he liked the sound better. Aluminum was recognized by ACS 65 years before IUPAC standardized to aluminum. IUPAC has recognized aluminum as an acceptable spelling since 1993. So yeah, the general concensus is the aluminum is okay even based on your logic because IUPAC says so.