1500 is minimum for withdrawal .
In 3 minutes it will be yielding 50 satohsis. So to reach 1500 it will be (1500/50)*3 = 90 minutes.
1500 satoshis = 0.000015 BTC. And considering if 65k is current market value which makes it 0.975 Rs. So 90 minutes it does not even yield 1 Rs.
Now you say should everyone join this?
Thanks for the calculations you made for the faucet, nowadays no faucet is giving a good number of satoshi. Previously the faucets are offering a good number of satoshis, but no site is offering satoshis more even Moonbitcoin sites also.