Modern ICE cars have auto start/stop systems, so on a traffic light it has as much exhaust as an EV.
Most start stop systems will disable themselves when the heater of the car is turned ON and the car engine not hot enough yet.
As a cyclist (or motorbike owner), it is pretty usual in city to have >50% cars with engines ON at traffic light in cities when temperature are low.
Also at some point they will start their engines again. Guess who will inhale that?
Sources: https://usa.streetsblog.org/2019/10/08/report-drivers-arent-... which references the BBC