I don't know Swedish from Martian, but I'm surprised the language doesn't have "pleasantries". They seem near universal.
I know that I (as an American) have had uncomfortable experiences with translated Chinese for instance, assuming someone was asking impertinent questions when it was really just them being polite.
I think most germanic languages are just much more focused on information content. On the other hand I can get into deep discussions with strangers, even disagreeing with each other, but not get emotional in any way, actually even enjoying the exchange. With Americans I feel there's a mountain of smalltalk and pleasantries to conquer until you can start being sincere. However that might also just me not understanding the culture enough to do that correctly.
Sure! Let's do lunch! Week 42? No my in-laws will be visiting that week. Week 43? Sorry, I have a dentist appointment that week. Week 44, no I can't then, but maybe week 45? Oh, we have a christmas thing that week. Week 46? I'm not sure, but I think I need to keep that week open. How about we get back in touch after the holidays? Absolutely. Rinse and repeat.
Americans will make up a hundred reasons to not do something when they don't have a technical leg to stand on. I was starting to hate this Belgian guy because he wanted something done and I didn't want to spend the time required to do it. Finally, after coming up with all sorts of excuses, I just told him the truth and thought he'd storm out.
He just said "Fine! Now we can go have a beer"
Try to look at it from the other point of view rather than writing it off because it is not your "one true way".