He’s not one of the “burning issues” of the day...COVID has put practically everything else in the shade, and Brexit also constantly attracting attention.
But think most people would like him out of the country...there’s a sort of suspicion that he’s not exactly a saint, and security arrangements around him have cost many millions of quid.
On other hand some people don’t want to extradite for various reasons...for example, some believe UK/ USA extradition tends to be a bit one sided, with US making it very difficult to extradite people that we’d like to try here.
And...of course...the legal profession love to spend public money on complex legal cases...I suspect it’s that rather than him having something that could embarrass UK government that is keeping him here. (To be fair government always seemed keen on getting him to Sweden.)