I don't have that much confidence in the officials and their rulings, seeing as they tend to advance anybody who complains.
With that said... you can argue Green isn't at fault while also saying she shouldn't be advanced. Incidental contact is going to happen between runners, and you can't (or at least you shouldn't) advance everyone who has the misfortune of bumping into another runner during a race unless it happens because one runner makes an especially egregious and/or irresponsible move (a la Rodriguez in the 2009 WC 1500). I think people are getting fooled by the spectacular nature of Hurta's fall. If you look at the contact between the two runners, it is limited to Hurta touching Green in the back to warn Green she was beside her, then a second later Green's left foot making contact with Hurta's right knee. That was it. It's amazing, but as off balance as she was, Hurta never stepped on or otherwise touched Green once she started to fall. They both made risky moves simultaneously at the end of the race - one trying to pass on the inside and one moving to the rail just before the final straightaway - and unfortunately they both tripped, one badly.