Journalists should strive for neutrality (good ones try to despite what boulevard tells you, they are on a completely different mission) even if they can never reach it. A case where neutrality fails often is deciding what is newsworthy and what is not.

That said, I don't see that as egregious and of interest because the effectiveness of the vaccine against this mutation is as well. It does not provide answers and the focus on the researchers is questionable, but I don't really see it as a problem or fear mongering.