why would they mention a new casino in their channel? they are trying to create a new brand so that there is no connection in the scam links. since 1win casino is considered a scam in my country, although they are from my country, they have more negative connections than positive. so it is obvious that they will not advertise a new casino in their main telegram channel
You can call out a casino for its scammy or shady behavior. But I would recommend not claiming something that you cannot prove. If you do not have any proof that they are the company owned by 1win, then please do not claim it. You lose your credibility when you claim something, but you cannot prove it. If Jetton is scamming you, they should be liable for it. But you should not blame 1win for saying they are connected just because of design similarities.
I never used any of those casinos, so I have no idea how their service is. As for buying reviews, I assume a lot of companies do that. But they are yet to get exposed. Trust pilot barely care about these fake reviews.