I would think there's some importance to it, but it would have to be weighed against other ethnic factors. There are certain diseases to which specific ethnic groups are more prone, nutrition would be a factor in general health conditions. We know already that underlying ailments can exacerbate Covid symptoms.
I'm sure it is quite relevant to those who do the tracking, but I am weary of the media telling me how important things like that should be to me. Tell me once and drop it, please.