Thanks for sharing a more detailed thread about the project, I receive a lot of messages forwarded to my FB Messenger account from my friends, but honestly, I never take time to read because I believe any project that has uses a lot of referrals could be potentially a scam project.
With the many projects in the space, we can always choose the best and I would never invest in a project that looks like a Ponzi scheme.
If it's only listed in the exchanges, we will have an idea on how big the money are coming in.
Even if it reaches exchanges (which is a miracle), by the large number of holders, it will worth nothing. Why should anybody buy a token when he can mine it using his cellphone?
If you deep check this scam network called PI, you will surely see how only ignorant people followed it blindly, and this the scammers target to reach the maximum large popularity.
I always advice users to check bitcointalk forum for all the crypto related topics, this will help them avoid being victims by ignorance.