[mikekchar]

Here are 2 scenarios that might explain OP's point of view.

You are walking up to an intersection and the crosswalk sign is green. You look right and across the intersection all the traffic is stopped. You look left and there is a car coming, but it is clearly slowing down for the red light. You step into the intersection, but the car doesn't actually stop. They turn right at the intersection. You have to jump away. The problem here is not that you didn't look, but that you misinterpreted what the car was doing. It would be best to wait until all approaching cars are actually stopped before entering the intersection, but next time you are crossing a street I challenge you to see if you always do that. It's surprisingly uncommon because the car is "obviously" stopping.

The second is more of a clear cut problem. Bicycles often travel at speeds much faster than people expect. It's not unusual for a road bike to be going over 30 km/h (just under 20 mph). Cars should wait for you to clear the intersection, but often they aren't looking for bikes and will make a right hand turn, cutting off the cyclist. It happened to me many times in Canada. I'm very happy that the turn-on-red rule is not allowed in Japan where I live now.

[Stratoscope]

California has a little-known law that tries to protect bicyclists from the "right hook" accident you mention. If there is a bike lane, drivers are required to merge into the bike lane before turning right, instead of turning from the car lane and cutting across the bike lane.

This is why bike lane stripes have a dotted section when approaching an intersection, to give drivers a hint about what they are supposed to do. Unfortunately, only a minority of drivers understand and follow the hint.

https://sfbike.org/news/bike-lanes-and-right-turns/