You are ignoring the bulk of the document...which is not standards
"which are not standards". And for which licensees are not supposed to be judged by. Nobody gets disciplined for violating an AO or FAQ. Not unless all those board members and the state atty are especially incompetent with the laws/regs as written.
Your problem is and always has been the competency of the part-time political appointees to the state boards. That's like saying the vehicle code is too hard to understand because that one (or 6) County-appointed court commissioner who is adjudicating the speeding ticket is incompetent with that material.
What do you think it means when some state boards don't have these problems? It means it can be done without making any changes to the rules, regs or USPAP.
If some state board has 2-yr terms and meets twice a year and handles issues involving 500 licensees for the entire state then the exposure of those board members to various problems and complaints and investigations and hearings and such then the individual members - appointed by the governor - may not all be adequately qualified to be deciding the fates of their licensees. Not that every member needs to know what they're talking about, but it would be helpful for at least one of them to be competent with the material. And that IS doable, even among the smaller states.
Regardless, those problems accrue to the lack of zero defect people, not to the idea that the material itself is unknown or unknowable.
Put it this way, if you had a board comprised of 6 Fernandos or 6 Terrels, would you expect both boards to have the same competency and performance WRT the application of the laws, rules, regs and USPAP? I wouldn't have that expectation.