Well, there are only a few influencers who care and are concerned about their viewers, and I also understand why, because they only do it as work, as long as they make money, that's all that matters even though they know that the other promotions they do will cause harm to other viewers especially minors. What you mentioned is true because most of those who promote gambling use a set up accounts to make the promotion they share more believable, sometimes the other influencers don't really know anything about gambling, it seems like they just accepted the offer because it's giving them a huge compensation.
Influencers are now willing to do anything to earn money. Although their propaganda goes against the society, they are not harmed by it. They value more on money. Moreover, in reality there is no way to say anything to them. This is only possible if the government prohibits or discourages them. Currently, the promotion of gambling sites on social media has increased so much that it is now creating a big problem especially for those who are not suitable for gambling. I've seen quite a few big influencer campaigns on my social media recently and I'm surprised to see celebrities conduct gambling campaigns like them. It is true that an influencer gets a lot of money for gambling promotion which no other platforms or businesses organization can offer. Due to which people are becoming more interested in gambling promotions. Anyway we all should raise awareness.