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.
I think Defi is a bubble and can explode at any moment. However, it cannot be denied that Defi projects are a trend that is trusted by most investors and will certainly attract a lot of investors in the near future. At first, I thought very negatively about the Defi projects but now things are different and just spend a little time researching on that project you can make twice as much profit in short time.
Of course defi can be said like that and that is what ultimately makes many investors afraid to enter and hopefully what investors are afraid of does not happen with this project, because if it happens it will have a bad influence on the good name of cryptocurrency and may not be able to make progress even more.