Think of voluntary censorship in terms of other things like voluntarily abstaining from alcohol, drugs, or even meat.
I avoid things that I believe are bad for my body, and I avoid things that I believe are bad for my mind. You might argue that it's impossible to consume something "bad for your mind", but I disagree. I think there are certain forms of entertainment (written, visual, and interactive) that absolutely can desensitize you, distract you, addict you, influence you (negatively), etc. - I try to avoid those effects where possible, and self-censorship is just one tool to combat them.
For what it's worth I have really appreciated this thread. I 100% agree with the comments that you have made and try and do the same. Unfortunately I doubt I will ever make the time to create a project like yours and just ignore certain media instead.
Thanks! If it makes you feel better, you can already use Calibre to do basic ebook editing (bulk find/replace profanity, etc.) - your ebook just needs to be DRM-free.
All my project allows me to do is export a set of changes on a book to a JSON-based metadata format, so the changes can be shared. I'm afraid to monetize it because I don't think I could deliver a good UX without breaking DRM (which would get me into legal hot water), but perhaps making it into a context-free Calibre plugin might be safe...
I avoid things that I believe are bad for my body, and I avoid things that I believe are bad for my mind. You might argue that it's impossible to consume something "bad for your mind", but I disagree. I think there are certain forms of entertainment (written, visual, and interactive) that absolutely can desensitize you, distract you, addict you, influence you (negatively), etc. - I try to avoid those effects where possible, and self-censorship is just one tool to combat them.