This feeling of verification >> generation anxiety bears a resemblance to that moment when you're learning a foreign language, you speak a well-prepared sentence, and your correspondent says something back, of which you only understand about a third.

In like fashion, when I start thinking of a programming statement (as a bad/rookie programmer) and an assistant completes my train of thought (as is default behaviour in VS Code for example), I get that same feeling that I did not grasp half the stuff I should've, but nevertheless I hit Ctrl-Return because it looks about right to me.