It's probably indeed easier to use "Finnish" as in "the languages spoken in Finland". Swedish is the native language of 5.5% of Finnish people, but most of the ones living in eg. metropolitan area have in practice native kind of Finnish as well. I guess it changes from person to person how one categorizes those, ie. is Swedish a specialty talked with Swedish speaking friends, or is Finnish a specialty but just talked with a majority of people. Usually if one categorizes oneself as Swedish-speaking Finn (usually when both parents have always spoken Swedish) like Linus and not bilingual, then it's Swedish that is the "normal" language.