The problem with categorizing some DeFi into sustainable and some DeFi as unsustainable is that no one really knows what is sustainable because most of what is thought of as sustainable is used primarily to engage with stuff that may or may not be sustainable

Just because Beanie Babies crashed in value, doesn’t mean stuffed animals weren’t going to be important.

For sure haha. If you’ve been around for a few cycles you’ve seen the same ponzis recycled with new faces. If you can’t answer the question of “where does the money come from?” = it’s not sustainable.