My observation is that in Obsidian tags are just an automatic search (which I love). So pages are created when I want to formulate knowledge of some sort, they are places to aggregate (and/or create) information related to the page name. Tags are specifically used to answer the question “under what searches would I want to stumble on this idea again?” Yes I try to keep them general and the list short - we’ll have to see how that goes with time.