It's right here on HN. I've been in threads where that sentiment was expressed. Don't gaslight.

Has it been expressed by Swedes or by people who are propping up the swedish approach because they support premature reopening of the economy?

I don't know. Can't know. At least one had a possibly-Swedish name, but that doesn't mean all that much. I do suspect that more are Americans, momentarily enamored of Sweden because of this one issue. I'm even more sure that any such will forget their love of Sweden as soon as they realize that Swedish attitudes on just about any other politico-economic subject aren't so convenient to their cause.