The very first graph shows that it's not "just another flu". Abnormally many deaths, even with the strict measures. Mainly for those aged 45 and older (but also not just "old people" dying, lots in the group 45-64).
Further down "Z-scores by country" also shows a pretty normal curve for Norway and Denmark but many excessive deaths for Sweden, meaning the notion of "sweden just reports covid deaths differently" that was common a few months back isn't an explanation.