I think you are confusing high roller who has one of two lucky days with a person who is engaged in advantage play.
If you are the first, the casino will welcome you with open arms.
If you are the second, the casino will ban you.
Those same monitoring tools which allowed Heartbreak Kid to recover his money also allow for detailed analysis of unusual betting activity. If there is anything at all to your friend's technique, they would have banned him.
My friend is not a whale betting at few hundred K a hand. At genting, per hand is $500 slowly move up to $2-3K ringgit. Each time could play max per table $10K up because playing 5 bases. Over the years, he clocked more than $800K ringgit. There is no more card counting already. I think you got to wake up to this issue. They are using Shuffler Master 126 machines. Please go and read up. I think you really very long never go Genting already. He doesn't need to cheat the casino. Sorry to disappoint you on this. You have a mindset that keep thinking Basic Strategy and Perfect Basic Strategy and think that there is no other alternatives. You don't surrender when you have 12, but he does. So what is wrong with this technique. Maybe the casino think his technique doesn't make sense but who cares if it wins in a casino and not on paper. Do you mean to say if his technique is winning and there is no cheating, they ban him? If that is the case, you might as well quit going to casinos. Because the casino only wants to win and doesn't want to lose.
Contrary to what you say, the casinos don't welcome everyone with open arms. The casinos have a shared blacklist of punters who are banned. Surely you must have read about this in the numerous blackjack books you bought. Don't they all emphasise on the need to keep a low profile when counting cards against a manual shoe? Did any book advise you to max out on your Genting pts (so the casinos can track you) or to swagger around in the high limit area where casinos survelliance is the heaviest? Card counting might no longer apply but those techniques to avoid being noticed if you have an advantage play still apply.
Maybe you should really take some time and walk around the casinos. There is no more manual shoe. There is no more counting that can be done on blackjack. Please do not stay in the same years as the MIT students who raided the casinos in Vegas. There are blacklists of people who are bankrupts from playing in casinos, cheating, conning. But if legitimate ways are applied in winning the casino, what reason to use in banning? My friend learnt his blackjack skills from an ex-junket in cruise ships. His teacher said, you can bet in land casinos, but don't play in cruise casinos. Experience and reasons not known to many. You will never win consistently from cruise ships because they are small setups and are unlike big land casinos.
So if Genting is offering limosines, rooms, nn chips etc, it probably means your friend is just an ordinary high roller. Maybe he exaggerated on his blackjack wins as many gamblers like to brag about just how good they are. Most times, they only remember the times they win and forget about the times they lose.
$800K ringgit over 2 years, 1 month once, avg about win $30+K ringgit a time. This is not exaggerating at all if you bet around $500 slowly move up to $2k. It's only 10+ units and playing 5 bases.
If I play 5 bases, 1 base $2k, 5 base $10K. Dealer bust 2 hands consecutive, I am up by $20K.
If you are playing 1 base slowly, 1 time $2k, you can slowly play to hit $30K.
You never seen doesn't mean it never happens.