Black Mirror is difficult to review, mostly because it’s an anthology television series. New characters, new plotlines, and basically everything that connects all the episodes together is the fact that they all share a science fiction element.
Oh, and they all seem to touch on the same aspect: how technology can be detrimental to our mental health. That new technologies also have side-effects.
I’d add that there’s also a big emphasis on how technology can become addictive, and it offering us a means of escape from reality making it quite dangerous.
That being said, even though there are some episodes that are absolutely brilliant ( from cinematography, to acting, to storytelling) I can say that there isn’t a single episode that isn’t worth watching.
Yes, Black Mirror is that good.
I highly recommend you give it a chance.