Assigning custom data view IDs in Kibana is advocated as a best practice to avoid chaos in collaborative environments, where multiple users might create similar data views with random, auto-generated IDs. By using intuitive and consistent custom IDs, such as those that reflect the dataset or environment, teams can prevent the fragmentation that occurs when visualizations become tied to unique and easily forgotten random IDs. This approach facilitates easier recovery of visualizations if a data view is deleted, as recreating the data view with the same custom ID restores the associated visualizations. Through an example using data from "Young Sheldon," the importance of this practice is highlighted, illustrating how custom IDs reduce complexity and improve workflow efficiency in larger teams, helping to maintain order and avoid the breakdown of dashboards caused by the deletion of data views with arbitrary IDs.