Yeah tbh the comment sounded weird to me at first, prob because the actual problem is not that I (ie the reader) am not part of the people that made the discovery, but because the author of the article who uses "we" is not. Maybe if I was part of such a discovery it would actually feel even weirder reading somebody I have not worked with on it as "we did it", but I have not been part of such a newsworthy discovery to test it.