Its easy to think of becoming successful in affiliate marketing with youtube channel that has lots of subscribers, it could be possible. In reality, its not easy. I personally have been there which is why podcast are much better and many have been successful with just choosing a trending topic and discuss it with a guest. However sticking to a particular niche like casino can't be get that much audience.
This is possible, but when we see the one successful youtube channel, we don`t see thousand of the same channels which have no subscribers ever and no one talks about it.
And the same time you need to work hard every day to create new content. If you stop - your channel lose subscribers every day. And the profit falls down every day too.
And in general, it is extremely difficult to maintain channel traffic at a level that gives at least some tangible income. I think there are already millions, a whole army of people disappointed in this type of business, who spent a lot of their time and received nothing in return. Also, the popularity is so changeable that today thousands or tens of thousands of fans look at you, and tomorrow you are forgotten and only a hundred fans are still with you. I would not advise anyone to start doing this kind of business now. Because the chance of success is 0.01%, and you will spend a lot of time and money.
And in special topics, for example, like reviews of crypto casinos, the chances are generally negligible.
It could be done however, there's a lot risk that comes with it. Since nowadays most people really aspire to be famous and generate a decent amount of income, most people pursue being a vlogger and content creator. In fact, there's a lot of newbies trying to gain more subscribers each day because they seem to think it's an easy way out of hardship in life because of the amount of money it pays.
However, creating a content isn't really easy as what it's suppose to seem. You have to be creative as much as possible and think of a subject matter that would get the interest and attention of the audience. If someone is going to stick in gambling as a subject matter, the audience would be limited since not everyone gambles. Searching topic about what to create could be a challenge too since gambling is controversial. It is possible, but it has its cons.
Surely it is so. The young men(mostly) see this stories of success and think that this is easy money. So they want to become popular with doing nothing for it. But when they create youtube channel, telegram group, etc they quickly understand that they have no ideas to create content every day. Sometimes they have enough ideas for the month, but later they just close it without any positive result.
I was talking with man that works on small TV-channel. Every day 10 men makes video and 50 men think, what video they will make next day, next week, next month.