Tak3shi Bishop admitted that there is n inconsistency between the guide and the bonuses fort actually provides. Fort provides the same protection from outside interference as war does but to a lesser extent, it is probably as intended but not as written.
That is not to say it is the same thing as that Elit and MA knew of this or acted on it. On the other hand dorje obviously ought to have known about it as he claimed he knew there was an inconsistency in the way wpa worked in fort fort relations and there is absolutely no reason to believe that something implemented at the exact same time with the exact same intentions with the exact same intended results would work differently. Any programmer would simply copypaste the code from one place to another, not write it twice(or write it once and implement it as a function that can be called by both tpa and wpa formulas), this is basic logic and one has to assume that dorje as an apparently functional individual has the ability to reason both rationally and logically.