They have quite a lot of money, particularly in foreign currency slush funds (see Room 39 for example). However the Kim family has the final say in what is government money and what never makes it onto the books.
They could probably afford a FIFA championship. It’s admitting they have that kind of money, that would be a huge problem.
I hate Mitch as much as the next person, but he fucking survived polio. He could be mumbling incoherently at this point and it would still be a huge personal and medical triumph. That’s not to say he should still be in office, but mocking his neurological condition after having survived one of the worst nerve-infecting diseases is in extremely poor taste.