

It depends. The artist being a bad person doesn’t automatically make the art bad. But I also don’t want to support bad people. So, relevant questions to me are: Is the artist still alive? Do they profit from my consuming their work? Do I promote them perhaps indirectly? The answers will be different for e.g. Lovecraft vs. Rowling, or rereading a book I already own vs. convincing my book club to buy new copies.
If you have your (encrypted) password manager file backed up to one or more otherwise unencrypted media, then remembering your master password will be enough in a pinch. But yes, for day to day password handling you’d want to have a few more memorized, e.g. the ones you’ve mentioned. As those are passwords you enter daily, it’s usually not much of a problem, especially if you use memorization techniques.