DEX projects are one of the best projects to invest, but of course if the project is still new, then you have to really DYOR or you will lose your money, so if you already DYOR and are sure about the project, then you can invest in the project and if the project is successful, so of course the price will definitely increase very high and you will get a big profit, then in my opinion if you are ready for the risk (losing your money) and already DYOR, so there is no harm to investing in the project.
I think " DEX projects " is/are a general term. That means there are still different projects under it. So don't say that
DEX projects is the best because not all DEX project are legit and has a potential. There are new and old DEX projects but I will say that they are still underrated because I think the focus of the majority are mostly in centralized projects, except of course for the one and only, Bitcoin, as we know that it was the most decentralized crypto, ever, invented.
If we can't DYOR, maybe we can depend on some else research, as there are still users out there who are only sharing a legit insights if what they think about a certain project. OFC we shouldn't be liked this forever but we also need to exert much effort, for us to not look bad from the others. It also helps us to protect our selves from possible scams and frauds.