Giving loans without collateral in the internet is like giving money to a beggar without expecting any returns.

While the subject is a wet-dream for addicted gamblers and impulsive traders, the ones providing them usually have put in some catch in the deal that allows them to hunt down the borrower.

For a small-cap investor being on the lender side of flashloans would be a type of gambling.

However the link posted by the OP is about a flashloans platform being exploited. Personally, I have been a fan of DeFi projects, specially which are trying to run lending and borrowing without DeFi itself being regulated. But I guess there is a demand for such loan sharking.