Currently, we are all concerned with an incredible escalation of (DEFI with Y)

the new cryptos of the future like (yearn.finance) several projects are currently in progress or in creation, But today I fear a huge scam that will happen because the prices suddenly explode so that doesn't even have an exchange or liquid just a pump going up and going down

There is no way to deny that scammers are heavily using the word DEFI and through this they are planting their scam traps. Actually we can't do nothing but revealing DEFI related scams or increasing awareness among investors where most new investor run after this type of project after seeing the name only. Even they don't feel it necessary to spend little amount of time before investing their fund. Its nothing new that scammers will take the advantage of any rising circumstances but investors have to be careful from their end otherwise like past scammers will fill their pocket with easy money.
A huge FOMO are happening recently around crypto markets about the word DeFi. So any project related this name means a huge hype and people are blindly trusting them. Also these projects critically setup lower total supply so that they can beat bitcoin and all the investor follow them more than others.
With limited supply its easy to create hyip on the market but hard to keep the price stable for long time. Personally i am not interested to make their comparison with bitcoin where a limited holders will get benefited before the price crash.