Being open with your name does mean that your phone numbers and address are likely to be public. Saarelma is a little more protected than the average, since Finland's equivalent to WhitePages is not freely available world-wide, but those in the United States with an unusual name can be found for free.

That's separate from the "ire of an angry mob" risk, which seems more likely to occur primarily for people who have a large enough profile that they'd have to have outed themselves anyway, though.