I haven't seem you mention you played the game before this, your comments where from spoilers and YT.
Do I need to, since I can know the story from other means?
Or should I play the 30 hours and then "yeah, strange, the story is exacty how it is on youtube videos, I expected it to be different".
I wont play it, but I like to be informed on it as I believe we are seeing first hand part of videogame history being written, this game is very very relevant and will be discussed for years.
Since you are commenting on a thread that OP is very specific to talk about the game (without any spoilers) and only from first hand experience, which means you need to play, yes you would have to play to really comment on how the gameplay feels instead of look.
Because several games when you see someone play is totally different than you playing, mainly the tension and achievement. Even more when you see someone that dominates the gameplay and make it seem very easy. Go watch GoW last Valkyrie on Give me God of War without a hit, you'll think the game isn't that hard, but now go and play and tell me it is the same.
You have already said your displease on the game story on several threads so I have no Idea why you entered this one as well that is to be story free and say the same thing.