That's mostly right. It's not so much that technology requires consistent rules but that it requires CERTAIN rules. Magic is the same way, but the rules of technology generally keep its effects confined...otherwise it might interfere with magic as much as magic interferes with it. Technology has less bleed-out. Probably the same principle as with supernatural creatures. They're each of a singular purpose and therefore don't suffer from the seepage that follows even the best wizards.
It seems that whatever effects are leftover from spells or seep from the wizard personally tend to be assimilated by whatever other forces they interact with. Which is why even strictly mechanical devices, even simpler ones can still be hexed. Electronics get surged, mechanics have their momentum unbalanced, etc. It's not so much that magic's power is incompatible but rather that if a device is already doing its job, the extra "oomph" from the adaptive power of magic overloads everything, even simple machines. Humans aren't affected because we operate under variable and dynamic circumstances already. Probably why wizards have so much more range than other supernaturals...humans have built-in buffers and shunts.
I'd be willing to bet that with the proper control, a wizard could power an electronic device on his own, without any outside current. He could probably do the same with other devices, but there wouldn't be much point in that. Usually their magic can do more than most machines. However, there's very little in a wizard's repertoire that can compare to things like the internet. A wizard with at least semi-reliable and unhindered access to the information superhighway would have a vast advantage.
