Avira > we know from people who were there at the time how the chofetz chaim felt
I think you wrote about this before, I do not recall exactly what it is. What is the chance that the people “who were there at the time” are ideologically aligned with you? We all often tend to believe unconfirmed sources that align with our own position.
My information comes from a 2-volume collection of Ch Ch letters published & translated by a pro-yeshiva velt organization, so I am not afraid that they show some pro-modern bias or omissions. To the opposite, they do not hesitate to add yeshivish geshmak – when Ch Ch writes about anti-religious books, they add in italics: all media, internet. When Ch Ch mentions anti-religious schools, they translate “secular schools”. So, I am pretty sure if there were any additional material, it would be there. I may have missed something, of course, but most other themes – build chadorim, mikvaos, shabbos are repeated in multiple letters and are impossible to miss.