I think drivers speeding is considerably more dangerous than cyclists running red lights.

In my experience, the vast majority of the time cyclists run red lights, they check both directions before going and there are not conflicts. The examples shown in the article are fairly rare.

Plus, the danger from a cyclist running a red light is mostly to the cyclist, while the danger to a driver speeding is to everyone nearby on the road.

Add on top of that the fact that there are many more drivers on the road than cyclists. The net effect is that speeding is a much bigger safety problem in total than cyclists running red lights.

(Note that I'm not endorsing running red lights.)