I don't get how that is a lie. If it is "ignorance at best" why not go with that?
Because I prefer "going with reality". If someone has to write a long, detailed explanation of "well, yeah, you didn't really do this but here is why I feel justified in claiming it anyway", it's not ignorance. It's a rationalized lie.
Pointing out a discourtesy is, in my kneck of the woods, pressing someone.
No, it isn't.
Where I am "since you insist" is a pretty common term for when you are pressed or shamed into something
See, you're doing it now as well. Using a synonym of a synonym of a kinda close idea to link a word that doesn't at all mean what you're now claiming it does. Shame is in no way a synonym of "insist". Using such lazy thinking, saying "dinner's ready" is insisting someone eat.
Can we get back on topic
We are on topic. Some people believe it's sometimes justified to rationalize a lie if they can connect enough words together, apparently.
I believe that is untrue