It means he could sell NFT's with absolutely no worth at all, no utility, no usecase, just to make sure that his followers would gobble it up and he could make some money out of it. And he is doing exactly that right now as well, he is just trying to make a buck. Some people are like that, they care about money more than they care about ethics or morality of it, and I understand, it's just in some peoples nature.
Trump's NFT has a use case like he said.
Each NFT that you will buy will give you a chance to have a special dinner with him, play in his golf course with him and have some souvenirs with a signature from him. That's it's use case.
It's kinda funny TBH knowing that he already said a few years ago that he is against cryptocurrency. I guess there is a group of people behind this project and they just asked permission to Trump to help them and in return, Trump will get a portion of the total revenue. Well, the 44,000 NFT that has been minted has been sold after a day only and if you will compute it, the company earned at least around $4.2M from it.
Most of those who bought these NFT's are probably his blind supporters who believed on the things that they can get once they bought one. Well, good luck to those who bought one.