This is nothing new. People send bitcoin to the genesis block all the time. Its basically burning bitcoin away. Sometimes its done on some anniversary of some bitcoin event and sometimes its done randomly.
The transaction came from an exchange which batched the withdraws. So there could of been 5-10 different actual withdraws and 1 of them was someone that sent it to the genesis block. Why did he send it there? Probably wanted to donate his bitcoins, I am not sure.
But this is not satoshi reappearing. If money was spend from that address it would be different but anyone can send bitcoins to the genesis block.
Nothing strange here people have sending bitcoin to the genesis blocks for the year it’s a basically like burning the coins some do it on bitcoin anniversaries some just randomly. how ever in this case the transaction came from exchange batching withdrawal so it could have been serveral transaction grouped together one of those users probably decided to send their coins to genesis block maybe as a symbolic gesture or a donation.
But let be clear this isn’t satoshi if coins were moved from the genesis address that would be historic sending to it is something anyone can do.