By "Framework" I think it is reasonable to conclude you mean "presumptions" or latent assumptions, which can be of many shades. Take the birthday celebrating as an example. Putting aside all of Terry's obvious assumptions inherent in all religious belief, we focus only on WT. It is defended by citing that since only two birthdays (excluding the possible reference in Job, which would not be a negative referent) are mentioned in the Bible, of two rulers, Pharaoh and Herod, and since something bad happened on those days, celebrating birthdays must be wrong. This is reinforced by the (further) so-called argument that Ecclesiastes' negative wisdom perspective of 'day of death better than birth' read literally but quite missing the point, IMO. Now, this method of using the Bible as a limiting tool, as if to say unless it is specifically authorized, but especially if its only occurrences are bad, then you may conclude this is God's way of sending a message about birthdays. That kind of argument is faulty on many grounds, but principally, the flaw can summarized as, Just because something is mentioned in two unrelated contexts, and something bad occurred at that event, does not necessarily mean that that this thing must ALWAYS be bad. Two bad birthdays = all birthdays bad. WT further assumes that these two (disputedly) sole occurrences of a birthday event allow us to conclude some unified coherent 'message' about birthdays, not just birthdays of bad rulers, or wish-granting on birthdays, as if it was the birthday celebration as the cause rather than the occasion. Jesus was executed on Nissan 14, and on Passover, therefore Passover was the cause. No? Well then neither was the birthday. Another example might be 'dogs' in the Bible. They are always described unfavorably or as unclean. Therefore we should not have them as pets. How many assumptions am I making to reach that conclusion?
My younger son wrote a parody article about the Satanic origin of mushrooms, since they should not count as 'vegetation' botanically speaking, and therefore did not occur during any of the six creative 'days.' You get the point--you cannot conclude that these texts represent an exhaustive almanac, but JWs always find exceptions, like 'anniversaries' aren't the same as 'birthdays,' etc etc.
I agree that idetifying logical flaws of arguments does help frame the JW worldview, and does reveal how backwards things are. Sometimes there is an agenda that defines how an arguments will play out. For example, C.T. Russell was deathly afraid of the doctrine of eternal punishment, even though it does seem to be alluded to eschatologically in both Matthew and Luke. Without going into any argument for or against the (ir)rationality of the view, it's being dishonest fundamentally to the text of the bible itself. The JW translation is also an example of this, changing the wording of things to suit doctrinal arguments. That didn't begin with JWs, of course, but it is just another example.
I think you make good observations.
Euripides