The book you quoted, The World of Yesterday, is fantastic. Thank you! What a fantastic read. I am astounded how much the world of the past, as it is described in storybooks, was made-up, and the truth was grim and desperate.
(and, for the pre-Great War predecessors of OnlyFans, see p.122 "...it held no less than twenty-seven pictures of famous dancers and actresses in extreme décolleté, as well as three or four nude photographs..." or p.67 "“Art” and nude photographs in particular were offered to half-grown boys for sale under the table by peddlers in every cafe.")
https://sammlungen.ulb.uni-muenster.de/hd/periodical/pagevie...
for even more damaging and unwanted writing: https://news.ycombinator.com/item?id=23611730