The problem I have with discussions on race is inevitably people say stuff like this.
On the one side you have people say there's no problem. On the other side you have people like J10 who think there is a problem and it is absolutely without a doubt everywhere.
Thanks to the internet - blogs and forums the two sides interact less and take their views even further to the extremes.
As for the manual itself - it's not impressive. How many manuals, documents did you 'read' when you signed up to work somewhere? I 'read' a ton because I was dealing with confidential information and money.
No, this manual will not change anything in a positive way. It's a feel good piece where people with liberal arts degrees justify their degrees (nothing wrong with that even though it sounds bad). And the people who read it and already agreed with it before they read it will enjoy it as well. So there's an enjoyment/justification deal going on with the manual.
So essentially this manual and the reporting of it by news outlets just entrenches the two sides even further.
What does this manual mean for the officers doing their jobs and investigating complaints, educating others? Nothing really. They'll probably ignore it entirely.
If they don't and take it seriously? They spend much more time on complaints, allegations than in the past.
In other words they become more like public defenders (overworked) or an HR department in love with their processes. Instead of addressing complaints, investigating and reporting to their bosses - they investigate and investigate and investigate because according to the manual, something must be there even though they can't find it yet.
If this office actually finds in favor of literally every complaint by a non-whitemale and then reports that to the Pentagon - they'll be laughed out of the building. They need to prove discrimination at least somewhat and not that the person was disadvantaged because of their ethnicity.
So TL

R - this isn't impressive, it's words with no action. No practical value here.