Good points, but you may want to reconsider your position. :) Sometimes companies are compelled to begin each job description with the same marketing information for internal or external compliance reasons. It's not always the best way to begin every job description, but sometimes it is a necessary evil. Wading through poor job descriptions isn't the best use of your time for sure, but if you can skip past the first paragraph you may just find a great job.
Employers, if you are looking for some tips on writing great job descriptions check out my recent post.
Zoe