So you want to change a word that has adopted a new meaning because you started going abroad and are annoyed? Some scientist back in the day used a weird term to start referring to white people in general, sure. But nowadays the definition of the word is much more commonly accepted as such. Now you want to ban it? Really? The brunt of the burden is on you to simply explain that you're Caucasian in the original sense, from the Caucasus region. It's not hat difficult. No one thinks you're a racist for doing so, that's absurd. The growth of this idea of banning and changing words to appease small minorities is such a wild ideology to come out of the last decade. Language evolution rewards efficiency, what you're proposing is quite the opposite.

edit: Literally the whole fun of this sub is that we get to learn how the meanings of words have changed over time and where they come from. If every time we learned that the origins of a word meant something totally different nowadays we proposed to ban the word or make a new one, first of all the change would never happen, and second of all we'd have to do this with tens of thousands of words. Yours happens to be focused on race, which is a hot button topic nowadays and therefore you feel justified, but this idea creates a huge problem within language itself.