There is no such thing as zero fee and instant transactionn. Any protocol doing such, if true, will not be sustainable in the near future.
What about the other networks that have zero fee transfers? Are they aware of your groundbreaking discovery that such a thing is impossible?
Even then ETZ actually smells like a scam from miles away. I would avoid it like the plague or ebola.
Invest wisely boys.
Based on what exactly? Put up or shut up. You can't just cry scam with zero proof and expect anyone to take you seriously.