In the Turchin model of societal collapse, discussing elite overproduction alone is not helpful at all. The model calls for 3 pillars: - elite overproduction and limited job opportunities - wealth pump and inequality - declining of popular wellbeing and growing resentment Thus, it only makes sense to consider elite overproduction within this framework.
If you can slap a moustache on economic inequality, you avoid academic accusations of unoriginality and the popular antibodies against "he who must not be named." This is good for the author, but for the reader? It's about as useful as trying to stick a fake moustache over that magnificent beard.