This show is absolutely outstanding. I have watched every single episode up to Season 5. S5 E1 was 'quiet' at the beginning, but I'm guessing it was preparing us for the incredible plot twist BM is famous for. Episode 1 was the best one out of the three. The casting of two African- American men who may generally be regarded as 'normal' good-looking and masculine men, to play on the thin line of what defines homosexuality, was incredible. However; S5 E2&3 were a bit disappointing. The storyline for E2 had a good message but was very mundane and E3 was too cheesy/commercial and not thought provoking.
As for the viewers who are complaining about only having 3 episodes... well, that's how Black Mirror is. You never know what or how much you're gonna get. Hopefully they'll give us more next time.