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 agree maybe it will drop any time when someone wants to do it, it's like the right fomo to do and people have been in it for a short time.
but if you doubt it you can avoid it, but this is also a good time because your money can add up fast of course with equal risk.