Since 2017, when the crypto was very booming at that time because of the bullish market, numerous projects were coming. It was likely many more companies wanted to be parts of the crypto world. However, that is the fact, more projects, more scams. As we know that so far, we can find out so many scam projects that always happen no matter what the types of the crowdfunding. Since ICO, IEO, STO, DeFi, there will be any scam and it cannot be avoided.
Although there are many scams, I think that around 50% are also legit projects. they are such as some projects likely HEX, DIA, Cartesi, DEAP COIN, and others probably.