Things I'd want to know before deciding for myself whether the screenshot montage is real, regardless of whether Trump shared it (he did):

• Have we seen other screenshots where Trump use enormous font sizes? Is that how bigger system text looks in this app? He's not exactly youthful, so it's no great surprise, but worth asking the question.
• Is it realistic that Trump or an aide would have screenshotted the entire message within two minutes of it being received?
• Does this messaging app routinely display the contact name offset and the profile image vertically cropped? What app is it?