Yet there are headlines such as The Healthiest Weight Could Actually Be 'Overweight. A study spanning almost four decades and involving more than 100,000 adults in Denmark found that those with an 'overweight' body mass index (or BMI) were more likely to live longer than those in the 'healthy', 'underweight', and 'obese' - https://www.sciencealert.com/the-healthiest-weight-could-actually-be-overweight-huge-study-finds
Which is what the article here attacks.
Being a little above average in weight gives you a little safety net should you end up in an acute situation where you can’t eat much for a few days.