Personally I disagree, I much prefer having the site name at the end of the page title - in fact most websites do this anyway. Also, it's not a problem if the page title is a bit long, as long as the important part (i.e. the question title) is in the first 65 characters.
However, it would be better if the title tag (and all HTML content) was part of the theme, so users can edit this easily if needed.