Well, that's true, you can be a professional YouTuber showing your gambling on your channel for example, because you are getting paid for the ads that you run on the channel.
As long as you actually get money from something you are doing, instead of paying for doing it, then you are a pro, a professional. That's how you "turn pro", when you start making money with anything.
this means that the YouTuber is deceiving many people, he or she is not gambling but making money from. it is important for us to pay close attention to all kinds of video content on YouTube, if it turns out that these videos can lead us to become gambling addicts then it would be nice to avoid that especially for those who have weak emotional control, it is not impossible in the future they will do something who are stupid when gambling turns them out to be ruined.
In my opinion someone which has those characteristics would have ended up ruining their life one way or another, as it is known that someone that develops an addiction now is more susceptible to develop a new kind of addiction at some point during their lives, so even if they would have been able to somehow avoid becoming gambling addicts then if they did not maintained some incredibly high level of discipline then they will develop a different kind of addiction anyway.