It's like that friend, and they won't stop their efforts until they at least achieve something, personally I don't think they're going to be very successful for now, AI for now is seen as a fad, it's not pure AI at all, what's done is AI, it's more important to use and have human intelligence to do any analysis well, you always see strange behaviors in some players, it may be that you're using an AI, you don't know, but beating a casino system is very difficult, I don't deny that at some point they can achieve it, but it is very difficult, an AI is not that powerful either, I know that many programmers have trained the AI in every way, but beating a casino is not easy.
They already achieved something but we know humans, we can't be contented easily and we always want to excel more or go beyond our limits. I still don't think that it will lead for a total defeat of the casino because that will be weird if it happens. It's going to cause a chaos in the gambling field. AI isn't a fad. It's a legit technology but there might be fake AI models out there who only join the hype.
A true AI is strong but it does have its own limitations. It's hard to win alone, that is why some people are forming a group. They combine their capital and share insights on how can they improve their play. Maybe they can win more but not to the point of destroying the casino.
Casino is a big industry, and for sure they will use all the money that they've got form any counter that they can do to avoid that chaos, though like you mentioned there's always an improvement and always a try to see if with the help of this system gamblers will have some chances to be on the upper hands, we all know about the house edge but it's not the focus it's more on how they will find the good information that will bring much quicker and easier way to decide their next bet.
Something that's AI can provide to help gambler to lessen the time on sorting each game that they will going to play to place their bet.