That childhood native-fluency analogy is insightful! Your experience matches mine.

I started programming at age 7 and it's true that the way code forms in my head feels similar to the way words form when I'm writing or speaking in English. In the same way that I don't stop and consciously figure out whether to use the past or present tense while I'm talking, I usually don't consciously think about, say, what kind of looping construct I'm about to use; it's just the natural-feeling way to express the idea I'm trying to convey. The idea itself is kind of already in the form of mental code in the same way that my thoughts are kind of already in English if I'm speaking.

But... maybe that's how it is for everyone, even people who learned later? I only know how it is in my own head.