Hardly a surprise. You'd be an idiot to go on the steam forum near release time anyway. 50% are posting spoilers and the other 50% are either posting random crap about the release time or complaining that the game is late.
It was only 2 people, I caught a glimpse like 2 seconds before they were banned, shameful.
Thankfully I don't really play games for stories (Most of the time) so it's not really a big issue for me, but lots of people want to cancel their pre-order just because of it.