We all want decentralization on crypto space to be more than just Bitcoin only, but the truth is I believe there won't be another.
The reason why the first thing that come in mind, mentioning cryptocurrency, is bitcoin. It provides what investors see as true decentralization. It only gets worse for any decentralized project, once centralized bodies begin to fit in the process and use it to make money. Centralized exchanges have brought multiple bad publicity on bitcoin, similar to what you're explaining about centralized bodies launching defi projects. These guys do the most marketing, and attract multiple people, who don't know much of bitcoin, to invest and they'll end up losing money to hackers. The blame goes to bitcoin, not the centralized bodies. If only the masses understand how bitcoin works, a lot of scam project will be minimized.