I play through Steam. I've played about 3 full playthroughs. Once in the initial release, once in the second, and once in the current one. I've had ONE crash.
Other issues inherent to the game? Yeah, I've had those. Characters going unresponsive, that sort of thing.
But I'm not gonna blame the launchers for the issues in the game. They're bugs. Odds are that if the game crashes, it's the game, not anything else.