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For 1, no not really. I do watch some people who gamble, but that's not their main content for the most part, and whenever they do, I usually don't watch them at all. I follow them not for gambling in the first place anyway. I don't think I have any gambling-centric influencer in the first place. I have watched a few big influencer tournaments though but that's about it when it comes to gambling content that I watch. Outside of sports tourneys themselves, I rarely watch people gamble their money away.
And even if I did watch them, highly doubt I'd participate in the casinos they promote. I rarely switch after all.