No one will dare to guarantee whether new projects like this are safe or not. According to what you shared, this mining model is not new, and these forms are easy to scam money from people participating in the pool to seek profits. Just because you are safe now does not mean that the project will be safe in the future.

Projects like this have a lot of potential risks because the money you participate in the pool will often be locked for a period of time, and the project owners are the ones who have the power of controlling on your money as well as the other investors. The profits from mining in my opinion are not worth the risks you may encounter. Many other new projects are worth investing in. In my personal opinion, you should not invest in new projects following this mining model.