How does Uncle Khosrove react to John Byro's complaint about the stealing of the horse?

Uncle Khosrove is the proverbial "crazy relative," the most eccentric member of the family, who are all eccentrics in one way or another. Khosrove's standard response is to "pay no attention to it," whatever it is, including, in one case, his own house being on fire.
With regard to John Byro's missing horse, Uncle Khosrove amplifies his usual answer by saying "have we not all lost the homeland?" and asking, "what is the loss of a horse?" in comparison. This is an allusion to the fact of both the Armenians and the Assyrians (a neighboring ethnic group, of which Byro is a member, in the old Ottoman Empire) having been exiled from their land in Asia Minor as a result of ethnic strife. Uncle Khosrove's temperament, though depicted comically, is partly a result of this primal sense of loss that haunts Armenians and other peoples who have undergone similar catastrophes. But beyond this, one can look at the larger meaning of the scene in which Khosrove and Byro are having coffee and cigarettes together. This is a typical way in which people from the Levant (the eastern Mediterranean and the Middle East) bond with each other, regardless of ethnicity or religion.
In Saroyan's story everything turns out well when the boys return the horse to Byro. But one has a sense that even before this, Khosrove—despite his irritability and yelling—and Byro, when together in the parlor of Aram's house smoking, are in a kind of demi-paradise in which the subtext is one of the relative peace and comfort the refugees have found in California.