I'm not sure when that book was written, but this would have been much more possible back then. In fact, I would think a skilled player would be able to do this with the old lower heat single deck games back in the 70s or whatever. Of course players back then didn't have the same resources as we do today and thus were probably not as skilled (just as the casinos weren't as skilled).
I will say when I started in 2003-04, I grew a 3k bankroll up to about 150k in about the same number of hours. At that point, I moved on to other things. I do still play a decent amount of BJ (though there have been many hiatuses) and I am up over a million lifetime gambling. So the story isn't that far fetched IMO.
One issue is there aren't many places that are ideal for getting started as a red chipper. I'm guessing anywhere that offered gambling would have been ideal for a red chipper way back when. When I started the many 5-100 (and later 200 max) mediocre rules, good pen, low heat games I had available to me in the Seattle area were fairly ideal for a red chipper. These days WA is anything but ideal for any type of advantage play. Things change quickly, and particularly when getting started it's more about being in the right place at the right time than anything else. These days I have the resources to research and travel the country to play the best games.
Happy New Year. I'm off to drink.