In the case of reverse-engineered acronyms like this one, I think there's a judgment call that you need to make: in some cases it is simply not useful to expand

In the case of reverse-engineered acronyms like this one, I think there's a judgment call that you need to make: in some cases it is simply not useful to expand the term. They explain what FLoC means very early on, but the expansion of the acronym conveys very little information since it is technical, somewhat nonspecific, and it's clear that the acronym was designed before its meaning. Consider, for example, that it's uncommon to expand military program acronyms because their meaning is often less useful than saying "it's just a word."