https://twitter.com/cryptorangutang/status/1311414919322128384
Is this kind of DEFi were made by Waves or not? 15% interest in national currencies is quite big. As mostly banks offer less interest.
I am not 100% sure but, from what I have seen in waves exchange desktop app, I think it's something like a decentralized forex trading platform? DeFo: Decentralized Forex? Sorry in advance if my answer is wrong.
Cited from your link: "So basically, you get 15% interest from staking e.g. Euro € or Yen ¥"
That 15% interest rate will not finish good for the most of the people. There are many PoS coin examples with high (much higher) interests. Where are they now? How big is their market capitalization?
Simple test: how many high and higher PoS coins or tokens are in Top 100 at coinmarketcap.com ?
Bitcoin inflation is now very small which is good.
You, some coins offer more than 15% interest. But this is risky. As price volatile and you can be in loss even with interest higher than 15% or even loss everything if this some unknown project and will die in one year. So 15% for fiat currencies is quite high.