well here's the interesting thing and my motivation to stay objective about what sweden tried (which is getting more diluted by modifications). im not a swede obviously, i don't have a horse in the race. but i think the concept and application of their strategy is worth exploring/experimenting with (unfortunate for the swedes that got murked) because it's in line with a lot of other viruses we've seen.
take a look at the daily increases in COVID deaths (not cases) for other EU countries. you have a handful in strict lockdown that are doing great (finland, norway)... but you also have new all-time-high deaths in countries like poland, germany, etc.
i don't think we're in the endgame of COVID yet and i don't think we know with certainty what approach was best. with sweden we have a small glimpse into what the herd immunity approach looks like (and the data is completely dirty because its specific to sweden). just compare the sweden covid death curves with other north-of-the-equator countries and look at shapes. i don't know what the end result will be, but i think something's happening.