I was in a charity shop the other day and I saw a signed copy of Dave Gorman's Too much information (published 2014) which I picked up for very little. Gorman is somebody I am only vaguely aware of but this book, mostly about the Internet, was informative, fascinating, amusing and enjoyable to read. Gorman started as a comedian but has settled into this sort of analysis approach, which is full of mild humour but appears to have a higher motive. I was very interested in a piece near the end that gives some insight into how things are promoted on Google.
Bonhoeffer uses a similar phrase 'worldly Christianity'. It's J Gresham Machen that I want to line up most closely with. See his Christianity and culture here. Having done commentaries on Proverbs (Heavenly Wisdom) and Song of Songs (Heavenly Love), a matching title for Ecclesiastes would be Heavenly Worldliness. For my stance on worldliness, see 3 posts here.