I understand the irritation with the bright side and the overestimation of guides, but their role, even diminished, is not entirely obsolete.
Certainly, they are no longer the primary source for choosing a destination, as the internet has revolutionized access to information.
However, for detailed preparation of an itinerary or on-site when the network fails, a thematic guide remains a valuable tool, much like always having a paper backup plan for an event if my tablet fails.