It means he got lots of funds from community, and easily to spend such huge money for a lunch. Almost everything we can learn from Buffet, we can get them all from his books, reports, and interviews. There is no reason to spend such money for lunch to have directly talks with Buffet. I don't think we should spend money for such things, if we have to work hard to earn money. But, it is not the case of Justin Sun, whom got easy money.