Definitely a negative thing for LTC. And a double plus for Bitcoin cash. The other positive, of course, being of Coinbase now supporting it. In the past few days and weeks, LTC was increasingly being seen as a Bitcoin's currency complement. This is a game changer. No words(the OP post) are strong enough replacement of actual skin in the game.

If Satoshi's coins move, all of a sudden, it will be a big downer for Bitcoin, this is no different. Instead it may have helped had he declared something like he won't sell it for next n years. That would have shown real skin in the game.

Please note I'm not doubting his intentions. But saying just what it seems like from the outside.