There's a lot of little shit like "Data_Crusader" that's just dumb and makes it hard to take seriously, but there's also hacky, cliche'd characters like Rachel. The conversation when she meets the girl on the bus is cringe-worthy. And a character has a meaningful tattoo she's unwilling to talk about? Wow. Good stuff.
The whole "it's a bottle episode because there was a terrorist threat" was pretty tired when The West Wing did it like 10 years ago, and then House did it, and then and then and then. Like, even the way Zoe died was really telegraphed because it was "referencing" State of Play when a journalist gets pushed in front of a train.
Also, Underwood's character transitioned from folksy to just straight up quippy, when previously the quippy bullshit was reserved for Zoe/Frank scenes. EXAMPLE:
The balls in your court, as they say.
Underwood leaves. Billionaire ponders baseball.
Which isn't exactly shit-hot TV writing.