They are not stupid. They will know someone will spot them in the app, so more likely they are using it to get clients too. Not saying they wouldn't be looking to hook up if they find a guy that's just their type. In your case @muscmtl I would bet you are talking about a bottom guy who rejected you not knowing that you hire on the side. Size queens do exist so he unknowingly lost business with you probably because you don't look like the typical client so he assumed you are just another guy on Scruff and treating you as such, if you didn't have 9" he had no interest. I've seen providers on the apps, and by teasing them I've realized some are on full sales mode, while others are truly just looking to hook up. If it was me, I would lose interest in the provider simply because as @rustyrex said, from the moment he rejected me outside of the hiring context he already killed the fantasy for me.