This is probably intentional -- if you want to fix a typo or make something clearer that you've already captured you likely want to preserve the original timestamp?
If you want an entry timestamped to your current time, you can make a new entry.
probably, i wonder if there shouldn't be an edited timestamp as well
this is the answer :)
fixing errors should not alter the timeline
I assumed that editing timestamps is also quite problematic since it will break the chronological order of the note