Exfiltration is different than kidnapping. Presumably the alleged spy wanted to leave Russia, in order to avoid extensive torture. Snowden wouldn't leave Russia just to receive extensive torture.
But yet somehow this involuntary thing would be possible in France, yet apparently unlikely in Russia? It’s not as though once in France he’d realize, “Yeah, I don’t mind, let them kidnap me, I’ll make it easier on them here in France.”
In most locations, one doesn't have a choice when faced with armed police. In France, those police who are on USA payroll don't have to be subtle about that employment. In Russia, they really do have to be subtle.
Unfortunately there is a list of European nations who were either complicit in CIA kidnappings (forced renditions) or where the criminal persecution for such events was ineffective lacking the political will to offend the US. Take this case for example