And to highlight a particular point: I endorse your claim about crisp concepts, but I think it should be ammended as follows:
You should not be seeking a crisp definition of a fuzzy concept, you should be seeking a crisp concept or concepts in the neighbourhood of your fuzzy one, that can better do the work of the fuzzy one. However, you should keep in mind that the given collection of crisp concepts might fail to capture some important nuances of the fuzzy concept.
(And it is fine that this difference is there—as long as we don’t forget about it.)
And to highlight a particular point: I endorse your claim about crisp concepts, but I think it should be ammended as follows:
(And it is fine that this difference is there—as long as we don’t forget about it.)