A point made, but would have been a good point, if the thread's author provided more information on how this can be a scam..rather than simply stating it  as a scam.
You can read more about the factors u need to consider for Pi network Mining and if its actually worth it?
https://www.cryptotapas.com/pi-network-is-gaining-traction-is-it-worth-mining/
https://www.cryptotapas.com/should-i-mine-pi-network-coin/