To be crass and frank; they were asylum-seekers. Total no-names in comparison to Assange. They were also not political prisoners in any capacity in Sweden (edit: in hindsight maybe you meant "political refugees"?). And it's disputable whether the course of action of extraditing them was an incorrect one, although the methods used were certainly questionable.
Also note that both of the men involved were each rewarded financial reparation afterwards, and one of them received a permanent residence permit.
At the time the case received a lot of attention, and there were multiple criminal investigations into it. It's not like no one cared when this surfaced.