Ignaz Goldziher is indeed the most malignant and critical orientalist on Hadith and its sciences but even he had to accept the amount of efforts put in by Hadith scholars in collection of the treasured traditions.
From one end of the Islamic world to the other, from al-Andalus to Central Asia, wandered diligent men gathering traditions in order to be able to pass them on to their audiences. This was the only possible way of obtaining in their authentic form traditions which were scattered in the most diverse provinces. The honorific al-rahhala or al-jawwal is hardly ever absent from the names of traditionalists of recognized importance. The title tawwaf al-aqalim, wanderer in all zones, is no mere hyperbole for these travellers, who included people who could say of themselves that they had traversed the East and West four times. These men do not travel in all these countries in order to see the world or to gain experience but only to see the preserves of traditions in all these places and to hear and profit by them, ‘like the bird who alights on no tree without picking at the leaves.’ It is said of these men that they are famed for the talab, i.e. for active search and investigation of hadiths (min al-mashhurin bi’l-talab fi’l-rihla).
See: Ignaz Glodziher, Muslim Studies (Muhammedanische Studien) Translated by C.R. Barber and S.M. Stern vol.2, George Allen & Unwin Ltd., London 1973 pp. 165-166
And Allah knows the best!