The original post highlights a (quite common) lack of understanding when it comes to the differentiation between automation (i.e. autopilot/FMS) and modern flight control architecture with things like flight envelope protection.
Automation is for the most part either on or off, and will not "correct" a pilot when engaged, because the pilot has delegated control to the automation. Envelope protection and the like is a different matter entirely, and only enters into the equation extremely rarely.