https://www.flyertalk.com/articles/t...-avoid-it.html
Aside from the fact this is a another non-article, apparently this community uses the term "deep coach". Can anyone link to examples of this? The article simply describes what any coach seat is. Nothing "deep" about it.
I could only find one mention of it in one old thread. After 10 years on this forum, I have never heard of it.