That person obviously did not want to be at risk for legal issues from Blizzard by publhsing it though. I personally wouldn't take that risk either.

This entire reddit thread aged really poorly now that Blizzard is a shell of its former self. If anything, the attitude in that thread is what paved Blizzard's decline: complete disrespect for its origin.

The StarCraft source code is something that must be kept behind closed walls, under tight control by Blizzard, even though the original people working on the game at Blizzard have already left and there is nothing to protect here other than eternal shame.