

I suspect that there is “palm check” turned on for your touchpad. This is designed to keep you from accidentally moving/clicking the touchpad by brushing it with your palm while you are typing.
Look for a “palm check”, “palm rejection”, or “disable touchpad when typing” setting in your touchpad utility. As far as I know, these are all roughly the same thing.
Interesting! When I first read your comment, I looked at the chart and thought “it looks to me like the drop starts at the end of 2022. Isn’t that before LLMs started being used broadly?”
Nope. Looks like ChatGPT was released in November 2022. It doesnt feel like it’s been around that long, but I guess it has.