The good and the bad about the conclusion of House of Cards Season 5

So we continue deliciously loathing the Underwoods right through to the end of House of Cards Season 5 (plenty of spoilers to come) when newly sworn in president Claire declares "My turn," but didn't the final episode(s) strain credulity even for this over-the-top series? Doug as the source of the leaks to the Washington Post about the death of Zoe Barnes (even at Frank Underwood's order?): nobody would leak to the press under any circumstances info that could link him to a series of murders. And FU explaining to Claire that he orchestrated his own downfall to advance her to power and bring him to an even more powerful position in the private sector? That's completely idiotic; he's damaged, maybe indictable now; if brnging CU to power was his goal he would have pushed her to run. Nobody, least of all FU, takes the fall like that. And Claire killing Tom Yates? Much as I hated their relationship - was it supposed to be passionate? or were we meant to see this "love affair" as ludicrous? - no vice-president is going to flat out murder someone in a Georgetown mansion and then call on an aide to get rid of the body - let alone killing a prominent writer and speechwriter for the VP. Speaking of which, the mansion own and political fixer Mark Usher is not a credible portrayal of a Washington insider and deal-maker to me; he's not suave, cool, or scary enough (though he had one good scene with the unctuous Rep. Romero). And now Leeanne (a great role of Neve Campbell) is dead apparently - wouldn't all these deaths of White House senior staffers draw a cascade of media coverage? All that said, the show held my interest throughout, as we wait for the Zoe Barnes hammer to drop - hard to see how CU can issue a pardon that will cover a murder committed before he was President. And you have to love the veiled or not-so-veiled contemporary references throughout, especially the speech about President Underwood: He has no moral compass, will just say or do whatever will keep him in power. Hm.