I think most of the comments are haters.
I don't know the particulars with Carnival events but I could see some real concern, if, for instance, events like this are used to showcase new talent within the soca, reggae, dancehall genres and how it can be perceived that Afrobeat artist are taking up space. On the flip side, I know there has been many Afrobeat festivals where Jamaican artist have been included.
It would be the same if there was, for instance, an underground hip hop festival and Afrobeat artist were included. That may strike the ire of some people.
However, Jamaicans and West Africans are in such close proximity to each other in London, sharing many cultural affinities, it's hard for me to see how Afrobeat artist wouldn't be included, considering the rise in the genres popularity.