There is something to be said about the moronic brilliance of these types of tweets. Suppose you're a hard-core Trump supporter; you're not a trucker, but you know truckers. Maybe the truckers you know are relatively apolitical; they dislike a lot of things the president says and does but believe the media is unfair. You retweet it to a trucker, or a trucker reads it, or the family member of a trucker, and how does it make them feel? Probably pretty good. Can you imagine Obama singling out truckers? They'd get a mention along with others performing essential services in a polished, scripted remark. No mention of the Almighty, no exclamation mark, and absolutely, positively no cap-lock. Maybe it would be sincere, but it wouldn't make anyone feel special. It might even come off as condescending.
We've seen Trump in the captain's seat of an eighteen-wheeler behaving like a little kid. If you're primed to loathe the president as a purely self-interested huckster, then the tweet rings hollow. It might be difficult to imagine the braying buffoon as ever being genuinely appreciative of truckers prior to public life. I'd guess that that's true, but it's not a calculated move. Trump's a narcissist, and narcissists are quick to reciprocate praise. If truckers love Trump, then Trump loves truckers. When Clint Eastwood made the comments that he made at the Republican National Convention, Obama didn't mock or insult the icon. He said Eastwood is a great actor and a terrific director. In other words, he behaved like an adult.