With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: Heinlein's first novel published as a book, "Rocket Ship Galileo", was initially rejected because going to the moon was considered too far-fetched, but he soon found a publisher, Scribner's, that began publishing a Heinlein juvenile once a year for the Christmas season. Eight of these books were illustrated by Clifford Geary in a distinctive white-on-black scratchboard style. Some representative novels of this type are "Have Space Suit—Will Travel", "Farmer in the Sky", and "Starman Jones". Many of these were first published in serial form under other titles, e.g., "Farmer in the Sky" was published as "Satellite Scout" in the Boy Scout magazine "Boys' Life". There has been speculation that Heinlein's intense obsession with his privacy was despite the apparent accordance between his conventional private life and his career as an author of books for children. In fact, "For Us, the Living" explicitly discusses the political importance Heinlein attached to privacy as a matter of principle.
text_B: Would people likely think Heinlein had non-mainstream ideas based on his children's books?
NO.