Bad for customers to be sure. Most have no idea what they're doing and have fallen for a scam hook, line, and sinker. They (loudly, incessantly) proclaim to their friends the benefits of a new money paradigm while deriving all sustenance through the umbilical cord of OldFi. ChromaFlair on a Model T.
The article itself is a hot mess of muddled thinking. It starts by talking about the Bitcoin white paper (not a "manifesto"), then asking the absurd question: "Why can't DeFi make good on the promise?" The reason is that "DeFi" is about as far from Bitcoin as "car" is from "carpet."
The Bitcoin white paper describes the application of proof of work to the problem of electronic cash. The vast majority of DeFi projects are just centralized ledgers operating through trusted institutions. They are the very definition of "mint" in the white paper - a single, corruptible player that sets the rules - arbitrarily if need be.