A lot of people are very confused about the term "evidence". Let me help you out. "Evidence" can be *anything*, and *everything* is evidence. "Proof" is a much, much higher bar. In a murder case, your fingerprints on the scene are "evidence". A videotape of you shooting the victim and laughing about it would be "proof".
So, does it make sense that carrying condoms would be evidence of prostitution? Sure. In the same way that slurring your speech is evidence of intoxication... but the real proof is in the Breathalyzer.
Really a hypocritical theory, give out syringes to drug addicts,but if you are caught with one and not a "certified" drug addict, arrested ? It sound as it comes down with the money that the state gets.