Defi is not a scam, just that those who are not try it before look at it as a scam. it's not good to hold your coins long in Defi, because the price can drop at anytime.
Hello newbie, you must know that the one who created this topic already has a lot of experience in DeFi matters, so it's clear that he has tried it, so he dares to create a topic like this, and one more thing you should know is that there is not only one DeFi token, some are good and some are not good, so you have to be able to sort these things out in order to know the difference.