It was not all peaches 'n' gravy for these women and their contributions are unfortunately overlooked today. But Hidden Figures was made to make a point, and its narrative serves that end.
The film does suffer from trying to compress a whole office of computers into just three people, and a whole remaining government bureaucracy into another handful (Costner, Parsons, etc). It also has to do this while covering a part of the space program most people today are not familiar with (technically NACA not NASA, Atlas and earlier). At the same time, it's reasonable to cut out the 90% that's normal office work, because it's boring and doesn't help us understand the time or situation.
Most of the events have strong factual footing, with the notable exception of Costner's white savior moment. If you want more information, the book is dry and a little disorganized, but of course much more thorough about the timeline and who did what.
Is it not obvious that it and other moments in this movie were hollywood slices of a horrific, decades-long, deliberate campaign of dehumanization and oppression?
Was the point that because the bathroom scenes as depicted were not 100% historically accurate that the oppression of African Americans was somehow misrepresented or exaggerated?
Maybe the commenter is aware that all of the memorable vignettes in Apollo 13 did not occur exactly as presented there because they were exciting distillations of what actually happened. Do they normally call those out when talking about the meaningfulness of the movie Apollo 13? I doubt it.
If someone has enough information to call out a representation as wrong in certain aspects, generally they have the ability to include the source of that knowledge, or at least why they can't include it (I seem to recall a book but can't remember the title... etc).
Also look at the comment from "throwawayhf" to find if the African American women were indeed forced to use colored bathrooms. Racism is not an invention by Hollywood.
"The point" it was trying to make is a straightforward one: NACA/NASA employed a shitload of black women, several of whom offered extraordinary contributions to the USA's space program. As if an ordinary contribution to such a major national myth weren't already noteworthy enough!
To bring it back to Jean Sammet, because this is her thread: To the extent the film is political it's because we've forgotten or hidden the foundational contributions of women to so many aspects of science and technology, and likewise raise a disturbing aura of exceptionalism among those we do remember. Sammet did good work and shared her expertise in the field for many years, or as Booch put in the obit "Jean Sammet was a strong, consistent voice of integrity in [engineering discipline]." Would that any of us be so fortunately remembered!