How? Fizzbuzz requires you to produce output; that's not functionality that CPU instructions provide.
You can call into existing functionality that handles it for you, but at that point what are you objecting to about the 'modern language'?
I’m not objecting to modern languages, I’m just saying that using them fails the “can write fizzbuzz with no help” test to only a slightly lesser degree than using AI tools. They’re a complex compile- and runtime environment that most developers don’t truly understand.