The first episode seemed long, like a tease (which it basically was) but once into it, it is gripping. As for those who doubt how quickly things could fall apart, consider the mass casualty events t-- hat would ensue from the basic premise (most airline pilots are men, so every plane in they sky equals a bunch of dead people, from the plane and on the ground; ditto trains, busses, etc). Then there are the shortages. For any doubters, just look at the current supply chain issues due to the very real pandemic, as a result of lots of production lines having slowed and lots of drivers not driving anymore - and nowhere near what Y's premise would bring!
So yeah, more you think about it, the darker it gets and the show gets a five for concept and delivery.