Bruce, anytime anyone speaks or in the case of forums writes something, they are bound to be misunderstood by someone. People just don't think alike.
You're right about written words not having emotion, but neither do spoken ones. Words convey
emotion, and the emotions will vary person to person.
If you find a post rude learn what you can from it and either try to find out why a misunderstanding occurred or if you can't be bothered, forget about it.
Following rules of etiquette helps to avoid these things. And sincere apologies help to clear them up.
Just my opinion and no offense meant to anyone at all.