Sweden changed its statistical method quite a bit (eg counting each 'act' within a rape separately), that, together with much more awareness of sexual violence

Sweden changed its statistical method quite a bit (eg counting each 'act' within a rape separately), that, together with much more awareness of sexual violence and a campaign and social changes encouraging victims and witnesses to report things had a huge effect on the statistics. Wikipedia has a decent-ish summary of the changes. Sweden doesn't collect data on perpetrator background or similar, so literally all of the articles in (primarily Anglophone) right wing media claiming statistics on that are simply made up. That being said, I'd not be surprised if numbers went up with an increase young single men, but the data simply does not exist to prove either way. The natural tendency is to guess the correct interpretation and read it onto the data, but it simply is not there.