How different are Finns from their Nordic neighbors?

Based on what I've read online, my picture of Finns is like this: Very honest and trustworthy people who never engage in small talk or feel awkward silence, always get straight to the point and have the no bullshit approach to anything, as opposed to neighboring conformist Swedes and Norwegians who avoid conflicts at all costs, try to appear nice and friendly to everyone and have tons of unspoken rules in their societies. Is there a grain of truth to it? How accurate is it?

Edit: Rephrased the final question because... Yes.