It also makes sense that since the open water priority is on ascending to resolve any problems, that teaching a recreational CCR diver anything other than bailing out at the first indication of a problem would be construed as posing additional risk.
Personally, I think that's a bad idea, as all things being equal, I'd rather have more knowledge than less. But we unfortunately have serious lawyer infestation in the US and consequently a very litigious society.
If a course is two days shorter it has to leave something out. If there is no ceiling and a 30m limit then bailing out will work. Why make it more complicated? If they want more options they can do the full course.