The fact that extradition is legally possible and the Swedish prosecution is proceeding against all common reason and established judicial practice in the only way that keeps it possible is very much "probable cause" as regards the motives of the Swedish prosecution and thus constitutes reasonable grounds to believe that Assange's concerns about extradition to the United States are sensible.
The paragraphs are conveniently numbered. Which one discusses extradition to the United States?
Of course, since your objection is disingenuous (you cannot possibly be so naive as to believe that the Swedish prosecutor will publicly state that her goal is to indefinitely detain a suspect), let us just force your actual beliefs into the open: (1) why do you believe that an interview with Assange will provide the Swedish prosecutor evidence to prosecute if she doesn't already have it? (2) why do you coonsider it reasonable to extradite someone who has never been charged with a crime to answer questions instead of asking them over the telephone, Skype or in person?
Not even the UK High Court considered the Swedish position reasonable (see Section 160), so it is hard to imagine any sentient person coming to the opposite conclusion.
> Under Swedish law the issue of a domestic detention order in absentia was a precondition to the issue of an EAW. That order was issued by a court which... had to be satisfied that there was sufficient evidence giving rise to probable cause and that domestic arrest was proportionate.
The Swedish prosecution (a political appointee) is claiming she cannot demonstrate probable cause without interviewing Assange, and yet she refuses to interview him. Leaving aside the absurdity of any reasonable person thinking that any interview will give the Swedish authorities the smoking gun they obviously lack, from a legal standpoint the only sensible explanation for their behavior is that it allows the option of extraditing without public judicial consideration of probable guilt and proportionality of prosecution. Couple that with the very obvious irregularity of the prosecution, the very real prospect of Assange facing indefinite detention in Sweden and the refusal to offer any guarantees against hand-over to the States and there is plenty of evidence that his concerns are very well founded.