Criticism doesnt seem so unbiased 

The criticism aspect doesn't seem very unbiased.  Here's why.  It intially begins by presenting both points of the view.  But then goes on to present Clint Eastwood's side of the view exclusively.  Basically after presenting Spike's viewpoint it doesnt go any further to explain why he said what he said and if he did know that black soldiers were indeed depicted in the movie 

Basically, it doesnt present third party viewpoints but goes on to REFUTE Spike's comments to SHOW that he was wrong. 
These actions(in bold) were done by the author of the wikipedia page instead of showing commentary or actions of spike lee and the issues involved.
While this may be true, it is not fair to present the information in such a way.  More comments should have been presented reflecting Spikes view point since a lot of text was used to tacitly support Clint Eastwood's viewpoint by refuting Spike's issues with the movie.  I think this violates terms of unbiased presentation on wikipedia.