Where the data shows people are getting caught running red lights.
Which isn't necessarily where the most incidents are.
In my experience it's the rich areas chock full o' Karens that get the latest and greatest in jackbootery because they have all the money for the new hotness, no real problems to divert their attention and almost nobody who's ever been on the business end of government enforcement so they don't see any real problem with dispensing it at the drop of a hat.
If they only installed them based on collision/injury data, and that data identified mostly poor areas, you would be ok with it? Because this is what the data finds over and over. The people most harmed by red light running are the poor people who live in these neighborhoods.