"A joke" is also incorrect, the guy is trying to make money. Nevertheless, if you reframe it as "for fun", vacations presumably should count. I rather doubt you would be unable or unwilling to spend 1000$ on a vacation?
Nobody says that everybody should be willing to spend money on an emoji email project. That just happens to be that person's interest, so they spent money on it. Don't you have any interests at all that cost money? I personally wouldn't spend 1000$ on many things that other people spend it for, but that is not the same as not being able to afford it.