If you do this you will effectively ban the scandinavians who only can speak finnish.
You are absolutedly right, which is a pity considered the well developed Finish tech scene and Bitcoin adoption.
I guess this forum should consider changing its name to "Nordic" in that case.
Make a strong argument for your case, and I am sure the forum will consider the option.
If we make a "Nordic" forum the language would have to be English. Having different languages (that not everybody understands) mixed in the same forum is just messy. So one solution would be two have 2 forums, one "Nordic" where the language is English and one "Scandinavian" where the language is Swedish/Danish/Norwegian.