I've watched my fair share of Youtubers who hate the game even after they've played it, and it just made me agree even more so with Naughty Dog, specifically Neil Druckman, that it is impossible to make a game this bold without pissing a few people off. You have players who just want to rampage through the levels and kill everything in sight, skip all the emotionally heavy content, skip the cut scenes, and then be confused why the ending turned out the way it was, resulting in them hating the game and/or story. I am glad that they are in the minority because the game has been a success, financially and critically, which it so rightly deserves. In order to enjoy this game to the fullest, you have to be 100% open with what's being presented to you and acknowledge that every player will come out of this game with a different interpretation.
Some critics wonder why a game that was sold as being about violence and revenge push the agenda of making violence feel bad or why there wasn't more of it, but that's beyond the point. In one of the Spoilercast episodes where they have Neil, Ashley, and Troy as guests, Neil even says something along the lines of "Some people say that the game is emotionally manipulative or that it's just trying to teach people that violence is bad... No! The game just presents you raw information and it is up to the player to interpret what they get out of it for themselves". From my own experience playing this game, this is absolutely true. At the end of the day, the characters are all nuanced in their own ways, make decisions that make sense based on their personality regardless if it is considered "good" or "bad", and conclude their story arcs having both lost and gained something meaningful to them. That's it. There isn't a moral to this story that ND tries to impose on the player; there isn't some final PSA statement at the end of the game that reads "Violence is bad and don't do drugs, mmkay". If I signed up to join the Army and then complained that the military is emotionally manipulating me to hate violence, that wouldn't be fair to the Army because violence and death is just the reality of the job and the Army's purpose or goal isn't to make me feel bad about it. The same is true for this game. The player is literally just experiencing a portion of the character's lives by living in the shoes of these characters and nothing more. What the player takes out of it is a reflection on the player and how they view the world. If the player hates violence and the game thrusts them into the middle of it, well good job, the player has re-asserted their dislike of violence. Don't blame the game for making you feel bad when you go around killing things.