That's why you should avoid investing in defis. Since they are very hot right now, it is no wonder that there will be people who will abuse it. Some of them don't even include the developers' real names on the whitepaper. I think you should definitely check this one before investing in them. If they want to remain anonymous you should probably not invest in them.
Well, developer's anonymity is not a reason to avoid investing in a "De-Fi" project. They can choose to remain anonymous in order to protect their project against government interference. Consider Bitcoin's founder which is anonymous. No one knows who Satoshi is, yet people trust Bitcoin by investing on it for the long term. To be able to differentiate between a good "De-Fi" project and a bad one, you'd need to do your own research. Analyzing the code is the first thing you'll do when deciding to invest into a "De-Fi" project of your choice. If the smart contract's code involves a level of trust (where the developers can freeze your tokens or gain access to them at anytime), then you should avoid the "De-Fi" platform as much as possible. The only downside to this approach is that you'd need to have some basic programming knowledge to be able to understand the code. Most people are not tech-savvy enough to do this, leading towards many undesired losses in the long run.
Nonetheless, "De-Fi" is all about being trustless. When trust is part of the system, you get nothing more than "Banking 2.0". There's nothing we can do about it, as crypto/Blockchain tech is open source. With heavy-handed regulations from the government, centralized "De-Fi" platforms might become a thing of the past. Just my opinion