Seems to me that any kind of doping at Sky is not organized team doping and is probably not 'wink and a nod' Tinkoff-style doping, either.
That's because Brailsford trashed a whole bunch of former dopers who used to work for his team. If the team was promoting doping, then somebody in that group would have snitched--because Brailsford treated them so horribly. And none of the fired people have snitched.
That's not to say that individuals or groups of individuals within the team are not doping, or that the team does not have lax institutional controls, or that the team does not use internal controls as early warning systems for the riders, but it does seem to indicate that the team is not particularly organized along the lines of former doping teams, like Liberty Seguros, USPS/Discovery, or Festina.