From the members I have conversed with, they are forbidden from using caffeine.
> It took a great deal of time, repetition, patience; no small amount of hope and faith; lots of reassurance from my wife; and many liters of a diet soda that shall remain nameless.
[0] https://www.churchofjesuschrist.org/study/general-conference...
This is the type of black and white response that I find so common with ex-mormons. If somebody pushes back on disinformation (even easily disproved like the above thing about keeping caffeine teachings secret), the superstitious thinking kicks in and excuses fly (like "they must be a secret apologist" which I heard recently). It's every bit as ridiculous as the believers are when they dismiss inconvenient facts like Zelph the White Lamanite[1][2] because it goes against their preferred narrative. It's superstitious thinking.
Edit: Hah! I couldn't have asked for a better real-time example to demonstrate my point: https://news.ycombinator.com/item?id=35774479
The exmormon community is extremely thorough and factual when it comes to talking about the church, because it is to their benefit. More people have left the church after unsuccessfully trying to refute The CES Letter than have ever left due to smear campaigns and slander. The truth is to the rational thinker’s benefit, which is why the church spends so much time and money hiding it and whitewashing it.
Um, I think you're confusing MormonThink and MormonR for "FAIR" or the "BoM Foundation". They're two "middle-way" sources that try to balance the knife's edge of giving just enough of the negative-yet-factual information that faith is still possible, as opposed to something like the CES Letter which is a compendium of pretty much every negative-yet-factual piece of information that, in total, make faith in the organization pretty much impossible for the average member who reads it. But they're definitely not apologetic sites, they're just more of a "shallow water" approach than a "throw you in the deep end of the pool" approach.
Mormonr is IMHO very fair, just on the other side fence. They're a faithful group, but they are committed to truth and scholarship and they're willing to say, "yeah that embarrassing thing does seem to be true" when it seems to be true.