I think there's definite racism there tbh. There's two main things I'd say:
a) They're saying that they aren't really French and not only that they are lumping all none-white people into one mass with comments like "they are all from Angola". There's lots of reasons why the n word and the p word aren't acceptable and one of the main ones is that they're used to say "you're not one of us" and to pigeon-hole people together in a lazy and incorrect manner (like people from Sri Lanka, India, Bangladesh or, you know, Britain being called p*ki by some). To me it's bascially saying you don't belong to those players, many of whom were born in France, and as Bod says it's none of their business - and incorrect both morally and factually.
b) The use of the word cometravas (which i had to google but apparently means people who like to have sex with transvetites?). It's stereotyping a group of people in a negative way on the basis of the colour of their skin. That's pretty racist.