I don't remember seeing any ads for Roobet on any platform outside the forum. You may think that it publishes updates on its channels on these platforms, but this is different from managing an advertising campaign with all its costs.
At a certain time, there were platforms that ran advertising campaigns only through the forum through signature campaigns and competitions. When there was a lot of traffic, the forum alone was sufficient to achieve the desired results of the marketing strategy. But this has declined significantly, and almost all that remains is Roobet that is adopting this strategy and which is certain to achieve the desired results.
They hitting more bigger market and you can read here their current target for their actions they do https://sbcnews.co.uk/marketing/2024/01/03/roobet-tiktok-crypto-snoop/
For doing that for sure they can get more virality of their casino since the influence of the people they used for sure will give them a lot more exposure to a lot of people especially for those people who are been exposed on online gambling scene.
I guess they are partially done with doing marketing here that's why we see less activities happened to them here. Then they want to try having partnership deals with famous individuals to get more better exposure for their brand.