"The ability to communicate is very important while dealing with a DBA position in a large corporation. It's even better when that communication is easily understood and the confirmation is a role in communication by both constitutes."
Sorry to be an old grouch (66 years old and still a DBA), but your argument becomes very weak when you don't follow your own advice. The article is a good illustration of your own point. You really do need to work on your own communication skills.
I do feel sorry for you in that this may be due what is going on in our educational institutions. My teacher friends report that they can no longer fail students - simply not allowed to. If they post failing grades, the grades are modified by others ( read that 'management', same difference ).
The tone of your article conveys that you may have a fairly long career ahead of you. Please use the time to hone your own skills also.