How do they legally get from "it's his hand holding the cheese" to "he's the true source of all the bravado in this nefarious forum" to "he's a drug dealer"?

If all they needed was a fingerprint, certainly there are more convenient ways to go about it. He's got to touch something other than his product.

This smells more like a false narrative contructed to cover up the actual source / methods for cornering him. Maybe law enforcement had someone on the inside? And still does? Or a loyal flunkie turned on him? But holding cheese? (Note: I'm aware this is technically possible. I'm questioning it's use in ths case.)

Much like the news stories of "car stopped on interstate and police find _____ amount of ______ in the trunk." Right. Of all the cars traveling the police randomly pick the car filled with drugs? Sounds great. But too random too often to be legit. They knew which car to stop but they're not going to say how they knew.