Getting caught ≠ getting arrested.
I read through the last couple of pages & I don't see anyone saying Vinge should be arrested... although it's a bit of a faux débat (as the French call it), i.e. a misdirection of the topic of sorts because context is everything. If a rider & his team are busted during the actual Tour de France, then sure, you'll get images of that rider taken away by cops (it's what happened to Festina).
I mean Bahrain had the cops all over them & they didn't even find what they were looking for. So yeah, no matter what people believe in terms of "punishment that fits the crime" (& whether doping deserves such repression), anti-doping cases in the Tour can involve men in uniform strong arming a rider into a police vehicle.