I do not care for indices. I rarely use them unless I am frustrated that I cannot find what I need in the book. If I have to use the index, then the book has already failed.
I find a lot of accessibility issues with the print organization. I work on accessibility in publishing tech as one of my jobs.
For me, the print organization fails on several levels.
I am happy there is a cool index for those who like them and I get it. Indices have been a gamer passion for years but I have never been one to heavily use one.