Episode 1 is probably the worst Black Mirror episode.

Episode 2 is not a Black Mirror episode.

I may update this as I watch the others.

Episode 3 is bad but still somehow the best of the season so far.

Episode 4 is also not a Black Mirror episode.

Episode 5 is explicitly not a Black Mirror episode, but it is the best of the season by virtue of the moral of the story being to always bash fascists to death with a ballpeen hammer.