My take: it is a chat room, not a trade room = trades are talked about but not executed. #2: no performance data at all, so cannot tell anything about their skill level.
I assume that you have already checked their YouTube account and concluded that the trades they show there are legitimate?
If it doesn't cost too much and you have some cash to spare, sure. But do your own due diligence and research still when it comes to your own trading instead of solely relying on their chatroom and vids.
I don’t believe it is worth it. These chat rooms are simply for conducting discussions and not actual traders.
In my opinion, you should not consider buying a sub to their chat rooms. It is better if you make use of those chat rooms just as an appropriate platform where you can have a detailed talk about trading and get your issues resolved. Doing actual trading there doesn’t make any sense.