Agreed, and here's a real example from a tiny startup: Clickup's web app is too damn slow and bloated with features and UI, so we created emacs modes to access and edit Clickup workspaces (lists, kanban boards, docs, etc) via the API. Just some limited parts we care about. I was initially skeptical that it would work well or at all, but wow, it really has significantly improved the usefulness of Clickup by removing barriers.
Sure, depending on the particular product, having control and direct local access to the data would be desirable or deal breaker. But for this Clickup integration that's not so important to us (we can duplicate where necessary), while still using Clickup lets us use all the other features we can get via the web app.
