Quite paradoxical: when its a person's native language we can spot it a mile away but there's no shortage of engineers who claim how good the code output is.
Whatever the reason for the default tone of AI in English, it's still there when generating code. It makes me think that the senior engineers who claim that it produces awesome output just don't understand the specific programming language as a someone who thinks in it almost natively.
Content creators are starting to include these traits into their scripts now, too. It's uncanny when you (literally) hear it.
Why would you assume this when the more likely reasonable is that the 'content creators' are just pasting LLM output?