Unfortunately, we don’t know who these ‘insiders’ are but they must be pretty stupid. What evidence is there that the low stock levels for the 5s are artificial? More importantly, why would Apple want to incentivise 5c orders over the 5s, when the 5s profitability is likely to be much higher?
Margins on the 5c could, theoretically. In dollar terms, though, the 5s has to be adding more to Apple’s bottom line than the 5c.