'OK, guys, I would not expect the younger folks to see the point at all. I am sure you will love their next models, the Al Qaeda, the Terrorist, and the Taliban.'
Actually, I do see your point, Jim, and I recognize that there are some people who do feel that way. I know people who won't own a Mitsubishi anything because of the connotations, and you know how touchy I am about people slinging around the term Nazi because of some of the people I've been fortunate enough to know over the years.
Your three examples, however, are NOT salient (just as mine weren't, but I don't think you, or any one else, picked up on it)...
The three examples you gave are proper nouns chosen by those organizations as proper names for themselves. They were not in the English language or our consciousness before that.
Axis, however, is a common English language noun with multiple meanings, and existed in the English language for about 400 years before Adolf Hitler came along.
And, unlike Taliban or Al Queda, the word Hitler used to describe the political affliation between Germany and Italy would not have been the English word Axis, but would have been Achse, or possibly Achsenmächte (depending on context), which are the German words for axis and Axis Powers.
The word axis was used in English speaking nations such as the United States to describe the politicial/military affiliation because otherwise about 75% or more of all Americans wouldn't have know what the hell Hitler was talking about because they didn't speak German.
Hitler's many speeches, virtually all of them translated to English at one point or another, are are likely full of common nouns that may have taken on unsavory connections due to cross translation and affiliation. Do you intend to seek them out and excise them from your language base, as well? If not, WHY not?
Had Savage named their new rifle the Asche, or the Achsenmächte, then I think you'd have a valid concern.
But to eschew a common English word that Hitler NEVER used because it's the translation of the German word that he did use?
I'm sorry, but that's just damned silly.