The millions aren't coming from individuals like you. Like most GoFundMe things that look successful, the money is arranged long before the fund is set-up, then it is quickly trickled in to look like the fund took off. It gains attraction and regular people start contributing and everything else is just a bonus over what was already a goal reaching amount.
Whether or not this guy has good intentions, this money is almost certainly gone into the void forever. Lack of money has never prevented the government from doing something, so personally funding this isn't going to help it along any. I came to post what I did, regardless of your post being there, so that wasn't intended to be directed at you. It's your money to spend however you want though, charity is charity and if it makes you happy, go for it.