We Don’t Need No Stinking Key Numbers?

According to a recent survey of lawyers, especially young lawyers, digital-age attorneys have little interest in so-called classification systems (and the results are consistent with my own preferences and experience).

As reported by Steven A. Lastres:

The lawyers surveyed use a variety of case law and statutory research processes. The majority report that they rarely or never begin case law research with a legal classification system using a digest or jurisprudence. There is limited use of the classification system on the Headnote as well, and then it is used only as a later step in the research process for finding related content. Even with that, a third of respondents admit typically not accessing a legal classification system at all when conducting case law research.

Has the natural language search (e.g. Google) along with innumerable free online resources, rendered digests and other proprietary classifications obsolete?