> The whole of crypto finance is an edifice of scam

That is straight-up false. It's best to not speak of things you don't properly understand. If it were true, they wouldn't hold the financial value that they do or anywhere close to it. You don't know the first thing about its utility and place in the financial sector.

People will try to scam others in basically every sector, even in academia. It doesn't in any way invalidate the respective sector.