The "off-site footnote" you're referring to seems to just be saying "The result is a pretty boring game. However, some of these ramps release extra balls after you have used them a few times. My guess is that this is the game designer trying to reintroduce chaos to make the game more interesting again." which is just a minor detail. AFAICT pros could score lots of points even without the extra balls.
(I'm leaving this comment here because I was getting confused about whether there had been major edits to the post, since the relevant content is currently in