Maybe not socially dead, but compared to the old halls (Farrer, Deakin, Howitt etc), Briggs and Jacko are no where near as social. Probably due to the fact that they are totally self contained - you've got your own kitchen, bathroom ect, theres not much reason to leave your room. Here at Howitt (Been here 2 years, looking at a 3rd year now) the kitchen is an extremely social place, you run into people on your way to and from the bathroom lol. You can't really go a whole day without having a decent convo with someone randomly. Also, briggs and jacko are fairly new so there hasn't been much time for an sort of culture and community to develop there, at the old halls there's a very rich culture and community with many traditions ect.
If you want a really good social life come to one of the old halls (Maybe not normanby though, its a bit dead compared to the others as well). But keep in mind if you want better grades, briggs and jacko are a much better option...MUCH better.. also aesthetically more pleasing, but financially expensive as all hell. Old halls are around $850 to $950 per month depending on the length of the month. Briggs and jacko are around $1300+ per month. That shit is cray man...