To be completely fair, Russia did decide to make an exception in this case, although it took a couple of months (during which Bushby was detained) to get there.

I am a little bit torn in this case. From our vantage point it's obvious that Bushby wasn't running an elaborate long scam to get into Russia. In the moment... I don't know, former UK special forces guy? Long history of espionage between UK and Russia? Two months seems too long; it's also not as easy as your case of a teenager in the sewer.