Either way, it does not change the fact that Sotoshi owns so many coins. This, by itself, if not fully watched for, makes investors nervous when the owner is anonymous.
But we've "always" known about Satoshi's BTC, and we've always had the blockchain. It's not clear to me what you believe has changed?
Now the physical identity is revealed. People can confront him directly face to face if he dares to sank the market.