So should literally every single person every commenting on US politics ever, because pretty much no person in recent history who has ever come close to holding any federal elected office in the US has ever advocated for actual socialism, even the people who self-identify as socialists like Bernie Sanders or Alexandria Ocasio-Cortez.

If you use the real definition of socialism, you might as well say "the US should not adopt Nazism" as "the US should not adopt socialism" because both are equally likely to actually be adopted (i.e. not very likely at all). No mainstream politician in the US is suggesting that the state should take over ownership of most private businesses.