It's so wrong in so many places, I don't know where to start.
The original movie was both, repulsing and fascinating at the same time. It felt true and authentic to Christiane F's life story, described in her book.
This series is the total opposite: a sterile, high gloss wannabe Hollywood version. It shows the horrors of drugs and prostitution in a polished and stylish way. The kids almost never really behave and look drugged and cynically even seem to enjoy prostitution. Why?!
Also it just doesn't feel like the 70's. Contemporary, mostly happy pop music (except of some original Bowie songs) meets modern fantasy boho retro 70ish to 90ish clothing and props style... Not to mention the 21st century interpretation of the kid's disco "Sound". Why?! My guess: the urge to come across original and creative took overhand.
What works with fiction like f.i. "Peaky Blinders", where alternative contemporary music fits perfectly in the raw and brutal 1900s mob scenery, doesn't necessarily work with every story. Especially with true ones it just feels wrong. This has neither much to do with the 70's, nor the book, except the title. If this would be an original fictional story, it might work. But nevertheless for me it lacks interesting characters and a gripping storyline.
This series is mostly about style. The camera is excellent and most of the actors are good, some are implausible (f.i. The David Bowie double). Therefore 3 stars. But please, see for yourself!