Even if blockchain are technically equivalent to digital signatures, it seems like it has some real advantages from a business perspective: - it is capturing the market of people who want to buy "official" digital assets and is becoming the de facto way to do so - the market is one that should have strong network effects - gaining the trust of that market is crucial to supporting these sort of trades
I still think NFTs are a bubble that will come back down to Earth eventually. But I also find sneaker and stamp collectors equally perplexing, and people don't discuss these phenomena with the same sort of skepticism.