All real and legit concerns. Fraud remains a big problem which is why returns are so high right now - we're all early adopters.

But there are new developments constantly. On-chain insurance against smart contract failure and hacks is a thing (see: https://nexusmutual.io/). More sophisticated insurance strategies to compartmentalize risk are coming up (see https://www.unn.finance/). Protocol design to reduce risk exposure are being experimented with (see: https://saffron.finance/).

It's all new and all very exciting. It's moving very fast and its really fun to be in. I haven't been this excited by anything since the early web.