Not at all! My company has 100s of clients and we track time in 6 minute increments. I feed in my browser history, terminal logs, session scripts, calendar, git commits, etc etc into it and voila it produces a highly accurate timesheet in no time flat.

Automating it has been way better for me than the alternative of breaking my flow whenever I'm switching tasks to chart my time, or logging all my hours for the week in one sitting. Different strokes for different folks I suppose.