This is the policy of "low hanging fruit." These stings are easy for LE to set up. An ad on CL or BP, a motel room, taped phone calls, two minutes of undercover meeting with a female detective. The elements of the crime are a sex act for money. Bing, "book-em Danno."
There is no need to send these would be clients to jail for the night but the DA wants publicity as a "crime fighter" during an anti-male wave in this country. To ad insult to injury, the clients are pressured into admitting that all these women are "victims." Remember that this activity is legal in Mexico, Canada, the UK, Germany and Spain.
Yes, some women are coerced into prostitution. They are often young, dumb, and/or drug addicted. That is and should be a crime. Go after the pimps and organizations importing them.
These arrested clients are mostly harmless but horny guys. This has been going on for millennia. The solution is willing and able women who are paid fairly and have a safe location. I would guess 95% of clients wish the best for the provider and are contracting for a service. Often regulars get genuinely friendly with providers.
Use TER to scope out established providers. Stay away from BP only ads.