Yep, that and the inconsistencies of timing. Some areas yellow are very long, some are short, and some seen to vary within the “allowable range.” In other words, encouraging people to slam on the brakes because God only knows when the lights will change.
I hate the cameras (I spend most of my work day driving city/suburban areas) and think that if they’re going to exist, they should have longer yellows to give more opportunity for drivers not to panic between getting ticketed or rear ended.