People who put their money into some yield farming smart contracts need to convince themselves and others that they made a smart choice, so they keep telling everyone that DeFi the future. It's the same story as with ICO, people were telling that IPO and other funding methods are now obsolete and everyone will be launching an ICO. Fast forward, ICO is synonymous with "scam" today. I'm sure a similar fate awaits DeFi, with all the hacks and rugpulls that happen all the time.
A most excellent point. They're a lot of the same guys too, I suspect. Telling everyone who cared to listen that IPOs were outdated and ICOs were the way. Now they're telling people on public transport ads to invest in Floki, and seriously telling kids not to waste time with 0% interest bank accounts and putting their money to work in high-yield Defi with XXX% ROI.
Because blockchain and "decentralization" makes interest sustainable...