Same thing here as well. You don't know how things will go, no point in losing energy by breaking, no point in continuing to pedal because you might need to break and lose it as well.
Plus it's the best for being able to look around and be aware of traffic.

While I do watch traffic signals I first watch cars. "The light was green but I got hit by a car" is a terrible outcome for me, much worse than "I accidentally went through a red light but there were no cars" or "I stopped but turns out I didn't need to".