Alright so I finished the story on Moderate difficulty. The AI was just like it was in the trailers and not underwhelming at all. Non-infected enemies do consistently refer to each other by name, the combat (except for melee imo) is very solid. The infected enemies are much more of a threat which is great. The only problems I have with the game are the box art and marketing. The trailers go beyond usual deceptive editing and outright lie about the story which really messed with expectations in an underhanded way. There's a reason why around half way through the game there's a review embargo and it did lead to a lot of disappointment and frustration for some, but for me it just made me anxious if the game was going to be ruined and also ruin part 1's story. In my opinion the first half is good, there's a drop off half way, and then things start picking up again just before 3/4 through the game. I think the ending was appropriate and is a good complement to the original. I'm also glad that the game is extremely accessible to people that would have needed assistance playing the original. It's really a shame it is getting so much hate, and review bombs. I get why people don't like the story, and there's a lot of respectful criticism of the game but there's so much disrespect for other opinions and the work put into making the game.
I'm still trying to evaluate my complete feelings on it, but for now I'd say Part 2 isn't comparable to Part 1 because a good job was done in making them two opposites into one whole. A lot of people were saying they felt "empty" after it and I have to agree. In Part 1 when you reach the final chapters a very similar feeling is there. There was a lot of debate over Part 1's ending and Part 2 seems way more divisive. I posted my comments on Part 1 in a Discord server, because it really ties into Part 2's story and end:
Part 1 and Part 2 are special to me so my opinion on them is biased. I hope The Last of Us concludes with Part 2, and if anything else in that universe has a story to be told imo it shouldn't be Part 3. That's basically my thoughts on it for right now.