Nothing wrong if there are people who will follow them without money involved. But the fact that they will soon ask for money from their users is already enough reason why people shouldn't follow them.
Nothing is free in this world even if at first they give it out for free, but eventually that will change.
Even if it's a good signal regardless of who shared it, then I think it's still safe to do your own analysis and trading decisions. As far as our experience is trading, then it should be a good lesson to get something in the market.
Lots of tools around which a newbie trader can use to help and guide them on their trading journey.
It is certainly not advisable to rely on trading signals, even if them are no longer newbie.
I believe we have to be more vigilant about what group we have to join and not rush without understanding their rules like this. As they are "soon asking for money" gives us a hint that their signal is not free. They are to be more precise with their signals at first or somewhat manipulate just for sake of building trust and confidence towards them but as the time you are paying them, doubted if they can provide you signal like before.
Even though I have no experience like this ( as I don't want it), I'm doubtful about the credibility of this group. Yes, it is absolutely safe not to trust these signal groups but instead of trusting ourselves.