I also noticed the same thing. If a signal group would be popular with their accurate speculations then legit subscribers will testify for them and they will be known and recommended for their crypto signals but none of those groups could last long. They're just being hyped by fake accounts just to attract more subscribers for them to earn more money.
That's true and the fake accounts are very obvious because if you review the accounts you'll noticed they have low activities and most of their tweets or posts are always about shillings.
One thing you'll notice about this signals group is, they're very common during the bull market but go silent in the bear market, that's because in the bear market they can't get users because all the market is decreasing but when we're in a bull market, they can easily pump any projects and dump.
Any channel that makes pump calls can make you lose all your money as they aren't always as experience in the market as you think, they just living off the hype of their community to pump shitcoins.