How do you measure if you are coding in the extension? I wonder if it counts activity (keystroke, mouse) or uf having the window focused (while grabbing a quick coffee, for instance) counts.
I'm not the parent you're replying to, but get similar stats on the average. I use RescueTime together with Neovim, and it works by activity. So if I leave for a coffee it stops logging the time I spend, and the window needs to be in focus. I also have the browser extensions setup, as to separate the time spent in editor compared to in browsers. The git repository is also logged, so I can see how much time is spent with what repository (normally use multiple repos at the same time). Not affiliated with RescueTime in any way, just a happy user.