I would expect more of this as law enforcement catches on. I am amazed on the apps that almost every one mentions drug (no drugs, no hf, no cf, or they mention hifun, hotfun, cf, etc). Chem sex is obviously pervasive enough among gays on apps that almost everyone seems to make clear whether they want chem sex or not. It is right up there with top/bottom/side.
The cops might not need dogs to find the perps with the drugs if they could just stand there at boarding and compare the people coming onto the ship with what they advertise on their hookup apps. I am guessing that there will be an AI function that could make this quite easy for the cops.