My problem with TLOU2 plot is that it can go from really good and emotional, to complete nonsensical thrash in a manner of seconds, the writer really wanted to write a revenge history, and he cuts all the corners he could to accomplish that. A lot of important events are reduced to flash backs or are simply left behind so that the revenge story doesn't lose it's momentum.

The examples i can think in the back of my head are: The one flashback where Ellie runs away to find out what Joel did at the end of TLOU1, she basically runs away by herself a few years after the events of TLOU1 and she conveniently finds a recorder safely stored in a bag containing the exact information she needed. This scene makes no sense at all because Ellie was alone during this whole time, she goes all the way back to Utah by herself in a world infested with monsters and bandits with no difficulties at all, and conveniently finds the truth she set out to find? That was supposed to be one of the biggest revelations in the story and it was completely ruined by bad writing, it doesn't make any sense no matter how you look at it.

It was a plot device used in the crappiest way possible.

Another example of bad writing in TLOU2 is when Dina finds out that Ellie is immune. She seems concerned at first, but shrugs it off almost immediately. And then, when they get a breater and Ellie tries to explain she ignores it and goes " Oh, i'm pregnant by the way. But don't worry, it isn't yours" and never touches again on the subject. Again, another point that should be important in the story, being ruined by bad writing because the writer really wanted to write a revenge story.