Yes, the connectedness of the Internet has made recent generations more cooperative.
Also, because younger people, and especially these YouTube stars, carry out much of their social interactions on the permanent public record, they're very protective and cultivating of their public reputation. This is why I think help is so often being asked for and given in this season, and why there's less bad-mouthing behind people's backs. Though helping reduces your chance of winning (unless you're calculating on a quid pro quo), refusing to help tags you as a #selfish #bastard, and trash talk tags you as a #hater #bully #troll. The models' biggest worry is not that they were eliminated, but that there's now a #whiny #quitter crack in their public front.