Elon answered this question several weeks ago. If you'll remember, he was standing outside giving a Supercharger Network demonstration. Then he was asked the question again during a lengthy interview at the Fremont factory and that interview came out right at the same time as the Supercharger demo. When asked the question then, it wasn't a 'quiet period'. What he said when asked the question last week is just what it said back then. This isn't new, he's simply repeating an already established answer. Not sure why so many seem to think it is new.
What is said by an executive after the end of a quarter is taken with greater meaning by market participants than what is said before. Preliminary figures that are available to executives after the end of a quarter can either change or affirm earlier opinions. Elon's affirmation of his earlier opinions carried greater weight after the quarter had ended.
The best general advice at any point in a quarter may be what I wrote in post #11351, which was for Elon to answer evaluation questions by saying, “The market appears to understand what our company intends to be accomplishing five years from now, and we are working very hard to justify that confidence.”