Another great example is the end of the third episode, start of the fourth. Arondir and the other elves make an escape attempt. They fail, Arondir is about to be killed, but for some reason he wasn't. They took him to their leader instead, who just lets him go with a "message".

- Why did the orc leader wait until the escape attempt to send someone with a message to the humans?

- Why would he believe an elf would relay his message, that humans could surrender and join him? Aren't the elves trying to prevent humans from being corrupted?

- Why did he give him back his weapons?

- Why are other orcs attacking him? Did Adar not even care if Arondir made back to the humans alive?

It makes more sense if you consider that the plot was written that Arondir would get captured, meet the bad guy, save the kid, and go back to the woman he's in love with to face the bad guy with the humans. Once that was decided they just threw together some scenes to fill in the blanks. No consideration was given as to whether the characters decisions made sense in the moment, only that they move the plot to where it was supposed to go.