Earlier quoted context omitted.
Sweden has a rather different welfare system, typical population density, income distribution, typical household demographic, urban planning and culture regarding social interactions, compared to many places that would use it as an example for what to do in this crisis. I think following the available evidence, interpreted by experts is the way to go. Ultimately the argument for Sweden's policy seems to be less based…
Sweden's strategy is also unique in the world and failing badly at protecting some of their most vulnerable citizens. It's also based on unproven ideas, like immunity from Covid19 after you get it once.
I don't know that any ideas are "proven". Evidence based medicine works on just that:evidence. The hypothesis that you do not get immunity, given the evidence from all previously observed cases of coronaviruses is the least likely. Why would you then act as if it were true?