Re: Why use the word racist.
@Man inna barrel
It might even be possible that the software was tested with coloured skin and worked under the 'ideal' test situations. If this is to work on personal machines then the hardware will be different as will the surroundings. Such would be impossible to test for all possibilities.
I dont think we have enough information to call racism but some people have such a low bar to call something racist that they consider your first paragraph to constitute racism.
As you probably read, for some the bar is so low that discrimination at all is considered racism.