uniswap is good and credible project; anyway investors should understand that defi isn't ICO/IEO but still hyped and risky investment... personally i invest not to speculate into defi projects, but more checking long-term roadmap, credibility and business model of each project...
truly to say it's always a choice - risk or not, and as for me defi is definately less risky than ieo and ico) i invest in dex project also...