Nature is one of the premier scientific journals? You're living in a dream world Neo, in terms of impact factor there are at least 50 journals more significant.
Oh brother. That's like taking an issue in a conversation about football with someone saying Barca were nowhere near one of the most valuable teams in the world, because i read an article in which they were placed 8th... but the article contains NFL, Baseball, Basketball, and F1 teams, and so on.
Anyway, I thought I'd still check and - as expected - Nature still comes in as far and away the top multidisciplinary journal under most rankings and citation metrics.
If we concentrate solely on Impact Factor - and disregard the subject matter - it was 14th in the published 2019 IF 'league table'.
However, the paper in question would have hardly been suitable for publishing by physics or oncology journals, so we can immediately discount 7 out of the 13 journals ranked higher.
And 2 of the other possible destinations, are specialist off-shoots of the Nature stable.
The paper was of huge general interest, so it's easy to see why Nature felt it was of interest to the general readership.
And also perhaps why the authors chose to publish to Nature's much larger readership, over JAMA or The Lancet.