The only argument is whether or not armed black military commands existed within the Confederate army. Everyone agrees that blacks contributed to the Confederate cause by serving as teamsters, cooks, musicians, body servants, laborers, carpenters, nurses and almost anything else in the military except enrolled soldiers. When Lee's army surrendered at Appomattox Courthouse, there were thirty-six black men among those paroles, all in the roles listed. No one debates that, unless you can find someone who does.
If you really believe that "academics" like Art Bergeron or any other published CW author is part of a conspiracy to ignore the authentic role of black men and their service to the Confederate cause, please provide examples.