Jack never honks the horn under any circumstances.
Two or three times a year, at least, there will be a car in front of me at an intersection, and they fail to go when the light turns green, often on a green arrow, probably busy texting.
I certainly don't honk right away, but if after 7 or 10 seconds they don't move, I certainly give them a friendly toot before we both fail to navigate the intersection, especially if needing to get a move on because it's an icy and slow intersection from a dead stop.
I absolutely can't believe any driver would not encounter this situation about as frequently as I do, but when they do they always just sit there patiently and miss the light and never give their horn a friendly toot.
GL