Their economy has still suffered along with everybody else's and they've had 10 times the mortality than their neighbouring countries in the process. I read somewhere (an article in the Times I think) that they had been hoping that they'd have reached circa 40% herd immunity by now, following their covid strategy, but when recently estimated its now more like 6% of their population have anti-bodies.
That said bravo to Sweden but they're not out of the woods yet. I do think the far far far lower population density and their cultural stand-offishness go a long way to explain their success (if you can call it that) so far