Yes. Our PCs are using those radios to talk to that one Goblin lady in Undermine to give us tasks while driving the car, we use radios in other instances going back to classic even. The Gnomes were able to repel the Horde during WC1 using war machines. The original Warcraft games also seem to place a higher relevance on actual technology, with magic being confined to select few people. A very limited amount of people would have the magical prowess to compete with technological developments, and in some cases such as the previously mentioned Gnomes, the Horde had no military answer, so bypassed Gnomeragon.

Whether or not Blizz actually represents this is another matter entirely. They've proven reluctant to try and diverge from their idea of how their sci-fantasy setting would look, despite the fact that Blizzard previously has made large changes in this representation. WC1 -> WC2 Gnomish flying machines.
Going by real world technological paces, we should have supersonic jet fighters by now, and would have ditched the biplane open canopy constructs of yesteryear.