These things usually make a trader lazy, for example, if he joins some signals group and he sees in the group when the price will pump he will buy and he was waiting for it for the whole day. In this way, he will not follow its strategies and he will be waiting every day for it to see the signals so I think it is not good at all.
Let the lazy do their thing because there's the impact of it later and that's for them to get a lot of losses from it.
There's no need for him to confirm if the signals are good or not because all of them are only in the favor of the one sending it to his members. If someone is too reliant to these signals and you really are making money, well I am happy for you.
Because out of the many people that have tried it, it's rare to see at least one or two say that they actually benefited from it.