Yeah google Cuban and DeFi. Dude took the brunt of a DeFi scam recently. And I think Cuban is one smart dude but in this case, he got taken in by the hype.
Not all DeFi are the same. Some are riskier and provides higher yields The reddit post was disingenuous asking did he miss anything and not discussing the most popular and highly rated ones like AAVE (which I explained to you is the simplest form of defi, a bank, deposit/lend_ Did he mention Compound, Maker DAO, Curve? How about you do research on those projects and you tell us how they produce yields?
What about the mystery of one of England’s largest banks telling people where they can and cannot send THEIR OWN MONEY (hint- Not to Binance).
So your logic goes, just because you are a thief I can steal too? Here is a Earth shaking idea, why don't you start about those? For extra credit, your logical fallacy is called whataboutism. The more you know....
Any of these assumptions can be true or false for Defi yieldings. They all are assumptions at the end of day.