rac·ist
/ˈrāsəst/
adjective
showing or feeling discrimination or prejudice against people of other races, or believing that a particular race is superior to another.
bi·ased
/ˈbīəst/
adjective
unfairly prejudiced for or against someone or something.
Since the comments have absolutely nothing to do with race, it cannot be a racist way of thinking.
What the article shows, is that people have a certain bias towards tattoos.
Some have a favorable bias,
Others an unfavorable bias.
Either way, race has nothing to do with it.
So it is a biased way of thinking.
(question: do you have tattoos???)