The non-decentralization of DeFi is something that along with using too much energy while being very slow at processing transactions, will be fixed in the future. Way, way into the future. This is a good thing, btw. It means there's still plenty of time for you to "get in".
You say "get in" as if the goal is making money, and not the technology or capability that it enables. Which is a perfect example of why crypto is a bubble.
I think your read on the parent is right but despite that, I'd encourage you to check it out. IMHO, the most interesting developments in computer science are happening right now in web3. Stay away from the NFTs/DEFI and just learn about the new systems being built. If you look into the technical details of these new distributed systems, game theory applications, and zero-knowledge proofs, I have a hard timing believing any programmer can't see the new features unlocked in how we build things.
It's also socially important for well intentioned people to join the system right now. Web3 is a thing, it will happen. Mobile happened and now two companies worth roughly a trillion each control it entirely. Web3 is roughly on the same path. It's being built right now to gate keep and capture value. If you don't want to the internet to continue to dwindle down to a privatized button pushing consumption app, the battle ground is web3.
