These kinds of videos are of course good and very educational. The problem is that you are always looking at a disadvantage when you are playing against the bank. With an optimal strategy you would in principle still have a disadvantage of 3% and in the long run you would therefore always be losing money. But with the right mindset and bankroll management you should be able to go a long way. And also have a good grasp of the strategy of Blackjack.
That is pretty much a given, in every single gambling game there is a small house edge that over the long term gives advantage to the house.
However in the case of blackjack as long as you use the basic strategy then you can decrease the house edge to very low levels to the point of making it one of the best games that a casino can offer when it comes to the house edge you have to face, but even then there is a house edge, so people should not create false expectation for themselves and think they can earn any money by following a strategy like this.
