Stumpokapow
listen to the mad man
The game in question was Street Fighter X Tekken.
The DLC is tied to Steam so that's ostensibly fine. What would be at question is purchasing and activating, which would go kaputz after GFWL goes offline. Assuming someone was interested in picking it up within the current sale though, there's still a window of time to get to it.
Judging by the actual exchange that occurred, I can't get behind someone equivocating the game whole hog not being available anymore with a game's online features/multiplayer getting the shaft. It's rather FUD-y.
You don't think online/multiplayer components are central to buying a fighting game?