system
A chat on subreddit /r/PoliticalCompassMemes
human
Apparently according to few comments it's other European languages causing Swedish to become a plurality rather than majority. Not Arabic. Apparently it was also only a single political party that said there should be Arabic schools.
gpt
Sweden has five official minority languages: Finnish, Sami, Romani, Yiddish, and Meänkieli

add in all the people that primarily speak English, and some Arabic here and there, yeah it’s no surprise Swedish became a plurality