Yeah, it's basically just formalized rules for communication, and I've been on teams where it worked great
I think it's awful when people follow it slavishly -- you chuck out anything that doesn't fit your team. And yeah, in the example you gave, it's a terrible fit lol
I have some stakeholders that do not know what they want and can't define it, so in desperation I dragged them thorough making fucking user stories -- user stories --and oh my god they loved it lol
They immediately started trying to apply it to everything too. I have regrets.