sometimes our research on related projects cannot prove the existence of signs that the project is suspicious. indeed many projects that look promising that can convince many people to be able to invest in it, but eventually the project ended scam. therefore, I think only teamwork experience can prove that the project is good for the future
Cooperating with people is more like relying on people’s opinion then, and if you look at one of the point the op gave which I also agree with, he warned a little bit on never relying on recommendation, because he believe that any individual has the ability to be responsible for their own action in a very responsible way, and the approach is simple, it is one of it that you mentioned.
We have to have the full knowledge of whatever is surrounding that which we are investing on, financial knowledge, trade knowledge and every other knowledge that is necessary for us to get to make sure that out capital is protected. I see many people advising on wallets, yes, it is one of it, the best way to protect your capital is just to simply eliminate the risk that is surrounding it.