Six of the nine points is about estimates and I agree. And depending on who you ask estimates is or is not part of Scrum, but that doesn't really matter... you

Six of the nine points is about estimates and I agree. And depending on who you ask estimates is or is not part of Scrum, but that doesn't really matter... you shouldn't be spending too much time of them and if your organization requires detailed estimates they simply don't understand "agile" and they are doing "Agile". The absolutely worst thing that I've experienced was the "story point budget negotiation" ... that is not how any of it works.