No, but I can see how it's happening. Those making the angry gestures should do their homework: the exit onto Conwy Rd is past the Traffic lights - not by much, but it is past them - and cars entering from that point are in exactly the same position as if they were entering from a side road.
Even so, I was taught never to trust any set of lights, and to take a lot of care when going through them. If you check the stats on people jumping red lights, you can see why.