"The fact it was a published letter in the Lancet and what weight that gives..."
No, that's doesn't give it weight at all. It's merely "our reader's reflections", i.e., the views, thoughts & opinions of the four letters authors.
To gain weight, you require an actual peer reviewed article published in The Lancet.
Not a letter that's far below that standard. 🤦♂️
"Myself I think a letter published in the Lancet carries significantly more weight than random “media” reports."
The media reports have clearly misinformed people to the point they thought The Lancet published an article, conducted a study & even peer reviewed it.
You were one of many, hence my response to you complete with screenshots.
Once again, it's a non peer reviewed letter that Lancet made clear is merely "our reader's reflections"!
It has no formal academic or otherwise weight. Simple as that.