This article manages to say that a consensus algorithm is the answer to problems with AI without using the word "consensus" a single time. Probably because it doesn't even consider that's what blockchains are.
The article talks about using "proof of gradient" to do inference instead of crunching hashes. But this is nonsense, because inference takes inputs and produces a deterministic output. There's no mining. Checking the work takes the same resources as doing the work. Proof of work output can be checked with essentially a single hash.
As much as this would be wonderful in a universe where it's possible, it's simply not possible. The author throws out a bunch of buzz words for things that sound similar in AI and crypto and tries to make them sound like they are interchangeable. They're not.