Yes, I watched it. I know quite a lot about Chassidic groups, particularly the Lubovich but the group that series was based on were Satmar who are more extreme. It was very interesting and quite moving in parts.
EineReiseDurchDieZeit, not all the women shave their heads or wear wigs but their hair must be covered outside the home. Some have ingenious ways of tying a scarf so no hair is seen , others put on a wig - sheitel - and a hat, but they can show their hair at home amongst own family. Like any religious group some will take things to extremes and within the Satmar, there are subdivisions.
When I was in Antwerp one year, something that was really striking was the women going somewhere as a group, with children and prams, etc; they were amazingly glamourous and well dressed, bright and colourful so it does seem to vary according to individual communities and places.
The men of course all wear hats outside and grow long locks, when you see a lot of them out they tend to look the same unless one is particularly tall, short or fat.
Their beliefs are at odds with other Orthodox, for example they are very anti zionist. On the whole they are not as materially prosperous as, say, the Lubavichers. A community of Satmar has settled on Canvey Island in recent years., they are a lot more open than those in London.
The girl who played Etsy (or was it Esty? Esther anyway), was so good I thought. She is an award winning Israeli actress.