1. I definitely did not say that economics does not strive for generalizability. Quite the contrary. I think the vast majority of economists strive for generalizable conclusions (i.e. go to great care to find study samples that are representative of the population of interest and use statistical methods that might allow them to plausibly conclude things about that group)
2. I never said "all" work in other social science disciplines rejects generalizability as an aim. However, I do believe, that more "empirical" scientific method based studies in a number of disciplines would be good. That is predicated on 1. a belief about the prevalence of qualitative/theory based scholarship. 2. a normative preference that the ratio is undesirable. I could be mistaken on my perception of the first point, but I don't think I am. On the second point, you're welcome to disagree. These are, like, opinions, man!
3. "reject the goal of generalizable knowledge because they question or reject 'the scientific method'" makes me think you've either missed my point, or you don't understand the nature of other forms of academic scholarship.
I'm not leveling a diss that e.g. a participant observation case study isn't a method intended to generalize from. That's just an intrinsic feature of that kind of study method. Of the qualitative researchers I've known, I can't imagine any thinking there is anything controversial about what I've said on that point. Though, some would definitely disagree with me on my opinions about what ratio of scholarship should be of this kind.
And lastly you've selectively quoted me there at the end, and attached a conclusion to it that is not mine. Consider this a bit of original qualitative research on my part: a sampling of non-empirical research that I've read in recent years has suggested to me a lapse in rigor in certain disciplines. But this conclusion is grounded in my "situated knowledge" of the space, and thus shouldn't be used to generalize without a suitably operationalized quantitative study ;-)