I don't interpret it as a imminent dump threat. Au contraire, looks like Satoshi has adopted SegWit and moved part of his stash to a SegWit address.
That's bullish!
SATOSHI NAKAMOTO LOVES SEGWIT!
afaik, 1000btc have been sold so far
https://blockchain.info/address/33ZgKQ9XSZQEum5JFqNTpqGTkQR4Zdtyvethe comments should be read, it makes a nice change from this echo chamber

Do you have specific comments in mind that you would like folks to read? Have you figured out whose coins they are? they were mined in January 2010 and they were never moved until today. O.k? Speculation that they are Satoshi's coins, but possibly not, too, right? What is the significance? Someone mining in January 2010 and got several rewards of 50 coins... what else is there to this story?