A safety measure
"At one point, nearly 20 people every minute were contacted by scammers using iSpoof, according to police."
Whenever I get an unsolicited call from any organisation where the caller asks me to identify myself, I respond "You made the call, so first you prove to me you're not a fraudster". Most fail to do so, even the legitimate ones as they've not been trained to do so. To me it's bananas to assume an unexpected caller you don't immediately recognise is genuine.