I say that as someone who read the Bitcoin paper in 2012 and was pretty excited back then.
Meanwhile online scams are a bigger industry than the illegal drug trade and bigger than the Australian economy. There are thousands of modern day slaves in call centers in Myanmar and the Philippines with fake social media profiles running pig butchering scams. That industry runs on crypto 100%. I guess that's one "problem" crypto solved.
You need some pretty convincing arguments at this point to convince me (and many others) that getting rid of this stuff wouldn't be a big win for humanity.