The special thing is that it’s decentralized. I know this discussion will not resolve and I’m not a blockchain zealot. I do think it’s an elegant decentralized storage system for algorithmic art where you make outputs definitive and collectible after initiating a run.
I think that's more than fair - "I like blockchain for decentralized proof of ownership more than other methods for the same." is as fine a preference as any other, of course.
For example, it's just as easy - and more accessible - to put the code and example configurations with output in a github repository.