There's hundreds of hours of discussion about how our brain reacts to our environment done by Andrew D. Huberman, he is an American
neuroscientist and tenured
professor in the Department of Neurobiology at the
Stanford University School of Medicine, if you're a person who is curious, I promise you recent research might radically transform your world.
He's not the end all authority on the topic. But he has a direct connection to many of the worlds experts of the topic. What spofify/youtube podcast achieve is more along the lines of carl sagon, only he's getting text messages at the speed of light from the worlds top researches, instead of having to travel to and meet up with other experts.
A) You need 1000s and 1000s work years worth of nutritional research to come to those conclusions.
B) One of the exact things the Huberman lab has does, very successfully, is do exactly that. Stick electrodes to your brains, and quantify your reactions.
What other researches have done at other ends of this research have developed abilities to do predictive testing, and where they can predict your reaction to this stimuli by simple filling out a questionnaire. Obviously there's a mountain of statistical calculations that go along with it. There are rates of error but there is also radically conclusive results.
Your eyes respond to flashing lights, shades colors, etc, to the point that a massive part of your thinking is, is directly what you see. In additional the tempo of a story, how fast it switches from event to event, narrative to narrative, is also relatively easy to notice.
Shows like discovery, objectively fill your brain with stimuli.
The reasons for this are not exclusively known to neuroscientists. Marketers etc are well aware of how flashing lights, fast transitions between narratives etc will trigger dopamine kicks.
They know that this behavior is most common in younger people. It is also highly tied to your environment i.e. how much time you spend on your phone etc.
This is all intentional as that demographic is where marketers make most of their money.
It's quite a conscious choice to throw other demographics out the window.
Are we not talking about the larger parts of the population?
The OP isn't asking why you don't like it, he's looking why it has so much negativity, especially in contrast to other properties?
Do you think the Mandalorian has a line around the city of people hating it? I hate Disney with an intense passion, and it's impossible for me to say it wasn't the best sci fi I ever experienced it, while the sequels were the absolute worst.