I had to look up the term "NFT", I've never heard it before. Some kind of high-tech way of marking the individual cards, so they can't be duplicated, and the markings identify their authenticity.
https://en.wikipedia.org/wiki/Non-fungible_token

I love Trump, and they're fun I guess, but I can live without them.
I think Trump's point in making them a "special announcement" was to do something enjoyable, without everything he says every day having to be a heavy-duty political point or announcement.

I skipped Trump's photo-book also, two years or so ago. A nice collection, but a bit overpriced, and there are plenty of new Trump photos and videos almost every day.