Let me get it straight - in order to earn 29.04% interest, I must buy 500000 FUN tokens for about €14000, then hold decent amount of BTC in order to get decent interest %? Interest is paid in BTC, not in FUN?
That sounds much bigger cost than €14000...
You don't get 29.04% interest. That would be insane. After holding 500K FUN for a year, You get an additional 25% interest on the base interest rate of 4.08%. So it's 5.10% interest. Yes, the interest is paid in bitcoin. If you don't think it's worth it, nobody is forcing you to buy it.