thank you for your comment. However, I believe we are not quite talking about the same thing in regards to 1 to 3.
While miners/verifiers don’t care about the origin of the information posted on-chain and are merely concerned with the accuracy of the value established and its history on-chain, there are a wide variety of applications, which depend on verifying data points off-chain. In the case of application 1 providing data created off-chain, application 2 might seek a way to establish its validity — independent from validators.
Additionally, this article was written over a year ago and does not discuss points 4 and 5.