Honestly nobody knows exactly what Kickstarter is planning to do with their blockchain implementation. This means the fears cover everything from cryptocurrency implementation (with its associated carbon footprint), to an attempt to dodge regulation (with the idea that the blockchain is 'ungovernable') and NFT implementation (with its obvious grift and ponzi-scheme economics).
Maybe I was naive, but I've personally lost a lot of faith in Kickstarter based purely on their lack of information about this whole shift. A lot of people depend on this platform to pay the rent - and none of them know what's happening, why, or when.