Nothing I wrote suggests your interpretation. The US government uses MFN terms in domestic vendor contracts in the same way Amazon does. This was plainly obvious in context, since the term was introduced in relation to Amazon. It has nothing to do with international trade and nothing I wrote implied that, "MFN" is a standard term if art in ordinary vendor contracts.

You are the only person that introduced the notion that this had anything to do with the WTO, international treaties, etc.