Repulsion force to change asteroid's trajectory by a few centimeters ≠ asteroid being nuked. It's totally plausible if detected early enough.
Yea, IKR, but thats not the point. The point is theres by FAR neither the proper technology for that, nor can be the trajectory paths be 100% calculated, nor is there enough data on the properties of big fucking rawwkits or any vehicle outside of our gravity sphere. Asides from some space probes, maybe they can go out on a suicide mission to crash into some asteroid ? :>
For those few centimeters to have an effect, that asteroid needs to be intercepted early on. For such operations, there are no means yet.
Meanwhile, enjoy the fireworks. It's good to remind the human species once in a while that they are, in fact, worms.