The problem is, there are many scam new projects created in crypto everyday.
Unless we have time to do some researches, we would never know whether it is a real project or not.
Polygon or Avalanche were new project back then, but some investors who has done their due diligence invested on them and got their profit.
You are right that mate and yes every day many scam project released ang offered us with a good profit that can catch our attention and invest with them. But if we don't want to be scammed we need to do a research about that specific project we should not give our trust easily we need to know more about them in order to prevent scam. Because now days it's hard to trust anybody or any sites/project .