Not sure I agree entirely. The actions I take are definitely data about me.
Also, in many jurisdictions data that could be combined (even in the future) with other data to identify you or something about you, is considered personal data.
For example, Device ID is AstridWipenaugh’s device and they use the app in the morning.
Yes, that’s exactly the point. Combining data is something that must be considered. (And in some jurisdictions like the EU you even need to consider if it could be combined in future with other data)