> Since Trump himself has absolutely no qualms about reversing his own policy,
You are making an invalid assumption that the 'extra 10% on September 1' was a 'policy' or in any way thought out. It was much simpler than that: he was at a rally and wanted another cheer from the crowd to feed his ego so he just said the first thing that jumped into his mind.
Now that he has been told that some people like to give presents to each other around the mid-winter solstice and that price rises would be unpopular, he wants another ego-feeding cheer by announcing that he won't do that (yet). It is, as is everything else he says, all about, and only about, 'ratings' and 'applause'.
When he was in the middle east last April (wasn't it) and was in front of a military crowd he announced that the soldiers hadn't had a pay rise for some years (a lie) and that he had arranged for a 10% pay rise this year (another lie). He knew nothing about what or how the pay was, he simply want to feed his ego with a cheer from the crowd so he made stuff up.
This is why America is now a joke for the rest of the world.
Biting the hand that feeds IT
