I agree. But at least it’s far easier for the cop to stop a driver, run their plate, run their ID, and then come back and say “I thought I saw you make a turn without a signal but maybe I was mistaken so I’m just going to let you go and ask you to be careful. Have a nice day!”
He gets the ID all the same, no one gets beaten, no one gets sued, and he keeps his job.
Bingo! You have a nice day, too!