So far it seems to be a Telegram channel dedicated to some sort of card counting, which is not necessarily an attempt to scam anyone at a first glance.
Though, It would be silly to assume cars counting could give one an advantage against the house when comes to blackjack, it is common knowledge casinos use multiple decks of cards in live casinos in order to deter those who count cards to increase their leverage against the house.
Probably there is some scam behind all of this, but I would not give deeper. I prefer just to be cautious, there are a lot of scams in Telegram, that is for sure.
You are very correct, this is just a way that some new people can be deceived. The house are in a way that gamblers will just lose at the end, people should not be deceived. When I see a services like this, I see them just like scam, but you are right that money is not involved, so it does not mean. But people should be very careful, when it is leading to what will let the pay money in one way or the other.
Yes, most likely this is a scam, and I thought he talks about about one of the leading game provider which is Evolution. However, card counting in online? It's not like that they are not aware of card counting. And for sure they have put a lot of effort to curb this already. They have a lot of deck of cards right now that it's impossible to count the cards. Of course, maybe the OP is inspired by some Hollywood movie that card counting is still a thing right now.
So this is just a warning that maybe some of you might fall for the trick because of a promise of big returns because of this so called exploit. However, as most of us know, if the OP is making huge money then why share it here? Doesn't make sense as the exploit could be crowded already.