We're in the minority, but I'm with you. It felt like in the first season, the tech and era took center stage to the point it was accurate enough to be an enjoyable element of the show. After that, they just wanted to rush and touch on different eras and the tech and eras were no longer the center stage. However, the stories were too cringey and couldn't carry it. And I'm just not a fan of Lee Pace. His deliver is one-dimensional.
You and others are both right: the first season is better in the "tech authenticity" dimension but worse as a script (literary dimension); with seasons 2+3 it's the other way round.