The issue being discussed is putting college degrees on the blockchain such that viewers can be sure they are genuine and robustly hosted without tampering - no revocation.
The blockchain solves the last two, but if your conception of them is as a magical technology that can solve every issue by virtue of hosting data then you're going to be a dissapointed simpleton.
Your core issue is that colleges are a centralized institution which decide who gets rewarded - that's what it boils down to when you say "all the value" is in trusted authorities issuing things. For starters that's a ridiculous assumption that trust is still necessary for value, but more importantly stating that blockchains are useless because they cannot replace colleges is disingenuous.
My problem with blockchains as the proposed solution here is that they solve none of the hard problems, introduce some new problems, (and no they are not an irrevocable record (as if that were even desirable), look up the DAO Hack or Bitcoin Cash fork and they certainly aren't proven to be permanent or reliable) and removing them would make the solution simpler and cheaper - the essential problem here is trust, not recording and sharing data.
You have not demonstrated any added value, and the straw-man insults sprinkled with spelling mistakes do not help persuade.
Yes I am straw-manning when you've built your original critique off a single niche use case (I believe the progenitor even used the phrase 'what if') and cite failing projects at least attempting to innovate as evidence of the uselessness of a technology which has achieved its original goal and continues on.
The blockchain solves the last two, but if your conception of them is as a magical technology that can solve every issue by virtue of hosting data then you're going to be a dissapointed simpleton.
Your core issue is that colleges are a centralized institution which decide who gets rewarded - that's what it boils down to when you say "all the value" is in trusted authorities issuing things. For starters that's a ridiculous assumption that trust is still necessary for value, but more importantly stating that blockchains are useless because they cannot replace colleges is disingenuous.