How this was written by a professional writer? this feel so amateurish

Two important points that apparently nobody have notice or just don't care

All the hallways and even the stairs are full of people during the concert, what are this people doing, where they are going? Only God and Shyamalan knows, this is a stadium and look more like a mall for the amount of people wandering around, the only difference there is nothing to see in a stadium beside the main event, so this has no sense, normally hallways in a stadium are empty during a concert because everybody is at the concert you know the event they paid to see.

And is clear all those people wandering like lost cattle walking around in circles during the whole concert is needed so Hartnet can blend in without been notice by the FBI because other way he would be walking alone and couldn't have done all the things he did, so this happens because the story need to aka lazy writing

Which brings me to my second point this dude must be a magician because he does a bunch of s** in front of a bunch of people and nobody notice it, he pushed the drunk girl in the stairs no way nobody saw him do that, how he sabotaged the fried machine in front of so many people who are around him? Literally they are close to him that s** is impossible, he took the walkie-talkie in a room full of police, and he didn't even turn around to see if even one of the dozens of police officers in that small place was looking in his direction, and that is other problem he isn't even sneaky he just does things and nobody sees him.

Recently check the list of all the movies directed by Shyamalan and I don't understand why I'm still watching this guy movies and still giving him the benefit of the doubt, of all his movies I only really liked 4, Sixth sense, signs, The village and Unbreakable, and kinda like split but mostly for the plot twist at the end, the rest of his filmography has been a huge disappointment for me at the worst piece of trash I have ever seen level