Put yourself in the shoes of your older self. You’re at the point of selling your collection that you have spent countless hours (and not an insubstantial sum of money) assembling.
What will you do now - let the auction house sell your coins like they’re common potatoes, or do you think you may want some token recognition of your collection for posterity, vanity, or perhaps for some small measure of immortality?
Some may not care beyond the point they have decided to sell. Others want their collection sold as a named collection, not unlike giving a book a title, however plain or opaque it might be.
In the case of the Anders Collection, this was the precise formula requested by the consignor, whose own name this reflects.
The second thing to understand, which is perhaps obvious after a little introspection, is that many collectors have no desire to have their full name made public (e.g. BCD, to name but one prominent example), nor their life history, nor what they had for breakfast. This can be for any number of reasons, but the most common thought process is that it’s rarely a good idea to announce to the world that you’ve suddenly come into a lot of money. 🙂