The CBC article you reference doesn't mention influenza - OP's topic - but it does point out that as of Feb 25, 2022 "More than 17,000 people have died from or with COVID-19 in Sweden, far more per capita than among Nordic neighbours". It looks like allowing milder pandemic control measures raised their death toll.
As far as I can tell we are in agreement. Your web page from Sweden says "Measures to reduce the spread of COVID-19 both nationally and globally contributed to a reduction in the transmission of influenza, while a sharp reduction in travel has also meant that influenza was only sporadically introduced to Sweden and the rest of Europe from countries with ongoing transmission."
The CBC article you reference doesn't mention influenza - OP's topic - but it does point out that as of Feb 25, 2022 "More than 17,000 people have died from or with COVID-19 in Sweden, far more per capita than among Nordic neighbours". It looks like allowing milder pandemic control measures raised their death toll.
That's certainly the case in comparison to Canada: as of April 13 2024, for every 4 covid deaths in Canada there were 7 in Sweden.