I am not sure the total count of how many books O'Reilly published last year, but they have not exactly slowed down in releasing new titles: http://shop.oreilly.com/
In SF, maybe. But most developers in the world live outside of SV (for example, there are on the order of 1M C# developers worldwide). They don't write blogs, or even read them.
Developer outside of SF (outside of USA, in fact) here. I read blogs, have written them on occasion. Have worked with many developers in many non-SV locales. None of them read programming books, most of them read blogs.
Can you use a search engine before posting nonsubstantive, dismissive comments?
https://www.publishersweekly.com/pw/by-topic/industry-news/b...
I am not sure the total count of how many books O'Reilly published last year, but they have not exactly slowed down in releasing new titles: http://shop.oreilly.com/