Why must I index Network drives in order to include them in Libraries?

Please excuse this rant, but I need to let off some steam. I have just run into the error message, "this network location can't be included because it is not indexed" while trying to add a mapped network drive to a library. My use case is quite similar to that described in Brink's (as usual) excellent tutorial, except that I have offloaded my public folders to my NAS. It is very convenient to access these folders via libraries, as described in the tutorial, but they take a lot of space and I don't need them on my laptop. Because of their size, it would likely cause problems to index them. IAC, I don't want or need them indexed. I am quite satisfied with the search speed in these volumes as it is. Why does Windows want me to index them? Is there no way to include unindexed directories in libraries?

Last time I checked when looking at Libraries, you cant even index mapped network drives in win10 except maybe with sym links. :)