But claiming that no BB currently has any idea how the GE actually works, is even a bigger problem. That would be admitting, that game creators have absolutely no idea what is going on.
Obviously the creators of the game engine know it and they know it the best. My guess is they are the only ones who really know the GE. Remember that a) this is a code base that has (tens of) thousands of lines, and b) from the technology point of view this is the biggest tangible asset of the company. These guys (is it mainly Charles...? I don't know exactly) are working only part time in BB in addition to having full-time jobs. As far as they have publicly made it known, the key priority for them is to teach the new full-time developers to run the game and get up to speed with the development tasks. I would imagine this includes the GE at least to some degree, although the first priorities are probably some other areas of the game (such as overall site performance). Well, now we know that there will be further delays with the new staff, since two of the latest three additions did not pan out.
The game engine has some known weaknesses and bugs, but it is a great piece of code and works well. As far as I can tell, the game engine is not among the main factors for the site troubles we have seen lately. Naturally it is important for the GE bugs to be fixed and for new developments to take place in this part of the code. These developments however need to take a back seat until the old BB staff can fully concentrate on their own tasks in BB and/or until the new BB staff can take care of it. The situation is not ideal.