Its so obvious that those people have no clue whats going on in the markets they respect. Truth be told, many of them dont like markets at all. So its just a lack of exposure and compounded ignorance.
similarly, maybe you/they just don't see the headlines of thwarted attacks in DeFi that work specifically due to design considerations.
I'll take the permission to fail. The rapid iteration creates some really fascinating systems in very short time periods, for me. One project implodes, 100 (or 1000) more harden, bigger money comes in creating more assurances for users like easier recovery and compensation paths, all while continuing to rapidly iterate.
For your strawman argument, all of their client side wallets told them “its not worth it bro”, the people did it anyway. Thats a consumer issue not a technology issue.
In 2021 alone something like $10B was lost due to bugs in defi land.
Something about the worst possible thing could happen tends to happen eventually and it gets worse every passing year.