What is the point of that?
> So now you have this composability of money which allows people to create new financial primitives.
Are there any useful for anything beyond gambling/speculation/NFT-like FOMO-powered bubbles?
> What is the point of that?
Leveraging arbitrage
what can be usefully arbitraged in that time in way that guarantees no loss?
VET-> Supply Chain Authentication for Businesses https://www.vechain.org/
Are two real world examples that are starting to see adoption. Also this articles covers it well: https://101blockchains.com/practical-blockchain-use-cases/
I have no idea how these two projects are supposed to work. Who is supposed to use this if there isn't even a concise description of the product?
Judging by their Twitter accounts both of these companies have been around since 2017. How many active users do they have?
All of the advantages of defi boil down to increases in velocity of money. For example you can deposit funds into a contract and receive a token that represents your liquidity position. You can then use this token in other applications. So now you have this composability of money which allows people to create new financial primitives.