This particular test has not been used for years. That is one of the problems. It has not been used enough to norm the scores and determine weaknesses.
If you will read the OP, you will find that the problems you are assuming is not the problems they discovered with the test. And content validity is an issue. The test was not found to have problems with validity and reliability because African Americans scored lower. It was found to have problems with validity because of the way that particular items were weighted.
Try not to assume that which you don't know. It prevents you from understanding the issues.
No. Eligibility for promotion was decided based on test scores.
We have nothing that states what was in the exam, what types of things needed to be memorized, how important those are to the job, what other knowledge or ability was tested and how important those are, what was in the oral section as opposed to the written, how the test was administered, how it was evaluated, who interpreted the results, how long it had been used, what other factors went into determining promotions, or any information at all about the people who took it.
You have absolutely no more evidence than anyone else in this thread. You are assuming a whole lot, based on one sentence of an article that stated the opinion of a certain group.
If you would like to provide anything to back up your statements other than the one sentence you've referred to in that article, I'm sure we would all be interested to see them. Otherwise, I would advise that you don't give others advice you seem unwilling to follow yourself.