Be suspicious of any projects that just decide to implement DeFi all of a sudden when DeFi wasn't implemented in the project's features from the beginning, this is nothing but a way to take advantage of DeFi Hypes going on nowadays, if you are a deep crypto fan like myself you should be seeing few old projects that aren't DeFi from birth and start talking about implementing DeFi feature, I'm 100% against this act as it's unclean and dangerous
You can't call them suspicious or a scam for shifting to DeFi, it is the hype, and these projects needs to gain customers, companies and entities who will use their service.
Now that DeFi is leading the scene, they need to adapt to provide the needed services for the growing interest in the crypto scene.
Remember that technology in the first place needs to evolve. This is the same for projects that are shifting to DeFi not just to pump their tokens but to gain customers who will use their product.
It seems that you do not have any idea on how this works. It's a business that need to continuously grow.