Mostly it was the cheesiest, most overused "twists" appearing with such mind numbing regularity that I honestly thought it was parody. Hence the M Night Shyamalan comparison. Which also made it feel like a 12 year old boy's idea of deep.

And speaking of 12 year old boys, I remember not being able to tell if the dialogue was supposed to sound like an overly serious 4chan user because that was basically the personality of the main character, or if that was unintentional.

And the daddy issues! Whining about a distant or abusive father figure is the default character arc of US cinema. It's probably an artifact of boomer screenwriters having dads messed up by ww2 but by now it's like a painting of a naked lady on a couch - the single least interesting choice that will fill that space.

I honestly mean no disrespect to people who enjoyed it - it makes no sense to judge others based on the stories they like - but hopefully the above gives you a sense of how i experienced the show.