> There can be great use cases for Blockchain just like this, wherein the proof of work is less taxing, or optional.
The prove of work part was more of a joke, I admit. Developers "mining" "software package blocks" is not really "prove of work" (even it is in some sense of course). :-)
> but these technologies actually can provide some great solutions to a more robust form of git lfs, dockerhub, or huggingface model centralization
Well, that's the Merkle trees part of the tech. You don't need any "blockchain" for that. Something like IPFS ( https://ipfs.tech/ ) is for example a nice demonstration of that.
But yes, there are useful applications of blockchains. Like https://www.namecoin.org/
But those are really rare.