not all pump & dump groups are fake or scam because there are also legit that can possibly help you to earn some profit but we must not depend on them too much because they arent stable . no matter how legit the pump and dump groups are but if the market is still down , they cant do anything to combat it because manipulators like whales are still the most powerfull above all .
How are you going to call pump and dumps legit when the original group or few peoples intention is to earn money. They will let their lazy dumb members pump it up more while they are actually slowly dumping.
it happened a few years ago, now I've never tried it again. it's difficult to benefit from this situation.