No I think you're absolutely spot-on correct Foxy. That's what I was saying about losing context; if you're in some complicated topic about politics or current events or whatever, it's absolutely essential to have the background for your comment, otherwise the point just gets lost. And if posters see that they can't make their point effectively, that undermines the whole purpose of a discussion board.
I like Gracie's term "totem pole quotes" if I quoted her accurately, and yeah it is a semi-solution to use multi-quote, but it still makes for more work.