It's always a good idea to check the address correctly, or send a small amount beforehand to make sure everything goes well.
Bitcoin has something called a testnet to try something, I don't why dissipation and waste the money even they can use that.
I think it is supposed to be a demonstration of ownership. The sender wants us to believe he has the private key to this address.
There's no have purpose If only 99 BTC. If that supposed to be ownership, who is proud to be satoshi? I think, he's crazy if want to be satoshi.
Unless he moves the coins to another address, I don't believe him.
You don't have to believe nobody because it's the genesis block address and only satoshi is the one who's known to have access on it but we don't even know where he is or might be dead and unlikely to come back.
When I look at Explorer, that address never sent any btc yet (only received), is it possible Satoshi forgot the private key?