What I find particularly interesting is that Sweden wasn't the only country that did this -- Brazil also did a no-lockdown strategy, and it was basically a disaster there. Evidently, there must have been some other factors at play besides the boolean of lockdown true/false. Better healthcare, maybe?
I can't remember the exact date, but I think in march or april 2020 there were restrictions put in place by government to limit the number of people that could attend a public event. Organizers and event-goers would commit a crime if they attended an event with more than 50 people.
Sure infected people did not get literally locked into their own homes, but "lockdown" is clearly more of a scale where some governments effectively locked the doors to everyones homes and some told everyone to stay home.