(......)
If all the team talks about is money that you will earn without any explanation how they will make that happen and also no technical professionals behind it it's a big red flag.
Indeed! They are more focused on how to collect money from people other than working on their projects.
This is the most scam project these days, they want people's money because they know they can't deliver the project so they will start on the money. This is already proven especially last 2017 - 2018 during ICO fever.