That's not to mention they usually change the timing to catch people off guard for more tickets. Someone went around in my area timing a bunch of different lights and found that every light with the ticket generating cameras had yellow lights shorter than the legal limit for the state.

The photo shows a traffic light enforcement, not speed enforcement.

There's a road near me that has an unnaturally slow speed limit enforced by a camera. That's a bit annoying. But, it also has red light cameras nearby. Those are great. I really don't care what someone's excuse is: I was distracted, I thought I could make the yellow, the light was taking too long... if you think you really do have a valid case, talk to the judge.