1. NFTs and cryptocurrency have avoided being heavily regulated so far, and it seems businesses have begun pulling out there "history of fraud and market manipulation", textbooks. We have enough of an issue with bottom-to-top flows of wealth right now that just poo-pooing bad behavior because the people being scammed or stupid or arrogant doesn't exactly seem constructive. Especially when the public education system is what it is.

2. NFTs are the least efficient and convoluted ways you can solve the problem(s) at hand. It demands enormous amounts of power and it's use at any appreciative scale would overshadow the energy use of first-world individuals (PoS is still not here or being used by the major players, so it's not really an argument). And the hardware using this energy is expensive to produce, currently supply limited (hurting normal folks), and is regularly cycled. So while we're already struggling with climate change and environmental destruction, this technology aims to create an artificial spike that makes it even harder to address for no real benefit.