Bullcrap. At the absolute worst, this may be considered a case of mild ignorance by not understanding the etymology of a word that has fallen out of common usage. Comparing it to actual racism trivialises the struggles black people went through during that time. Don't be stupid.
This thread would have died a lot faster if people didn't insist on denigrating the experience of others. It's totally possible for 5th Cell not to have intended to offend anyone in the slightest and for there to be a subsection of people who are hurt or offended by the content. These two things can exist at the same time. The people who are hurt don't have to be called names in order for 5th Cell to not be racist.