It’s not crazy to think that could have an effect on the steering shake. It wouldn’t be my first thing to suspect but that doesn’t mean it’s not the problem.
When is this shake occurring? All the time? At certain speeds? Only when braking?
The other thing is, you’ve shown that the studs aren’t centered, but, is the hub itself centered? Is the center register of the wheel tight on the hub? The factory wheels are hub centric, aftermarket wheels are often lug centric. If the wheel is lug centric then the studs not being centered could absolutely cause the wheel shake. If the wheel is hub centric then the studs not being perfectly centered might not cause the shake as long as the hub itself is centered. Which is not to say that the lugs being off center isn’t an issue, just maybe not THE issue.
It certainly shows lousy craftsmanship, so, it might not be the only problem with those rotors and hubs.
Other stuff to check would be that the wheel bearings are properly seated and have the correct end play, and any run out on the hub and rotor.