There’s been plenty of discussions why the “what could have been” got buried in certain people jumping in, creating weird layers and interpretations of some process for their own profit and ego.
Chinese whispers then lost in translation.
But this is extremely fragile, because it takes a lot of energy to fight external people (often product people) who want to remove the self-management aspect.
Unless this is in the DNA of the company, you can't have agile or real Scrum, because it threatens those kinds of power-grabs. For this to work, you literally need someone threatening to fire people who attempt to micromanage others.
We did 2 week sprints, but that really was more to keep a remote team regularly in touch and updated. Sprint work was very much up to each dev, and at the end of the sprint anything that changed or slipped was just chalked up to lessons for future work.
That did change eventually, both as the team grew a bit more and funding started to run low. Eventually we had the worst of both worlds mentioned in the article, sprints with more rigid goals leading to a quarterly goal driven more by marketing goals than anything else. Throw in the fact that the still rather small company ended up with one person making product, marketing, and even technical decisions and we devolved into glorified code monkeys pretty quickly.