Hollywood’s portrayal of astronaut Neil Armstrong in the biopic “First Man” was quick to elicit the attention on Friday of aviation legend Gen. Chuck Yeager. Social media platforms lit up before the weekend as news spread that Ryan Gosling’s latest film does not include the American flag being planted on the moon. Critics fretted that “First Man” would essentially turn Mr. Armstrong into a progressive caricature when Mr. Yeager, 95, weighed in. “Ryan Gosling is coming out with the movie First Man where it portrays Neil Armstrong as a liberal progressive anti-Trump (in spirit) non-flag waiver,” a user identified as...