And most of that mega-thread is from people who have not used calibre/DeDRM before.
Couple of nits you left out.
- Older versions of K4PC/K4Mac will not download books published after 2023-Jan-02 so not much use in searching out older versions.
- calibre updates a lot more often than DeDRM does.
- Google can be very helpful if you craft your search queries properly. Though in my testing in the last couple of days has suggested that even 'remove ebook drm" gives a link near the top of the search results to Epubor titled Free EPUB DRM Removal. Google-fu counts.
- Not all ebook formats and not all DRM schemes can be handled by DeDRM. How many times have we seen a post from someone who has downloaded ebooks using a application and wants to know how to remove the DRM?
- Offering help other people with their issues with DeDRM helps to keep that knowledge fresh in your mind.
- Compared to writing and compiling my old BIOS ROMs for CP/M, installing and using DeDRM is a lot easier. You want fun, try dealing with booting from a tape drive with a 2048 byte ROM while handling all the other needed tasks needed to fake a disk drive to allow running CP/M from a tape drive. When I switched to using PC clones, I also implemented using a tape drive as a random access device. Years later, LTO came along.