No, he says it's not an exploit because it doesn't matter what the devs intended. He says that only technical bugs can be exploits.
Sorry but your entire thread is based on your misunderstanding of the word exploit.
PS
What happened to:
Is that no longer true? Suddenly it doesn't matter how an exploit is defined because it turned out that you were wrong?
I'm keen to avoid this thread turning into an argument, that's all.
But I will say again what I said before.
The difference is the game is working as designed. It's the responsibility of the game developer to ensure the game is working as they intended.
Case and point.
Frontier have said twice recently that due to untested design players have earned credits and blueprints Frontier did not intend them to by playing the game normally, and they will no be removing credits, blueprints or progress as a result. This is because these were gain by legitimate game play and the error lies with there QA.
However
When players EXPLOITED the engineering rolls, they removed progress and in some cases banned players for using the exploit.
That's why and how it's different.