I will take the positive side of the DeFi project, boom or not, this project is contributing a small portion of investors' funds to the crypto realm, the crypto market capitalization has increased due to this project, the popularity of the Ethereum platform is more trusted after many ICO scams in 2018.
The situation of the crypto market is unpredictable, however the DeFi project developers, managed to give confidence to the world, with high token prices and with the decentralized financial system they offer.