It's obviously good news. The rules applying to securities are much stiffer, which is why several CFTC-regulated markets have launched since 2017 (LedgerX, CME, CBOE, Bakkt) but the SEC has rubber stamped nothing.
It doesn't seem clear cut that an ICO must be a security offering. (Most of them obviously are but that's neither here nor there)
As for POS, it's a (flawed) form of decentralized consensus administered at the protocol level. Why would that make it a security?