Hacker News Reader

the approach here was to combine the simplicity of apple notes, working across devices, with the automatic time-stamping found in the desktop ecosystem of tools.

Obsidian/SublimeText users are probably not the target audience for this :)

Yeah, this seems like an Obsidian package waiting to happen.

Obsidian already has this, super-D for date, super-T for time, trivial to add inline as you go, if using a single-note approach. And any new note automatically captures its time of creation and last-edited time.

having to hit an extra key and miss out on cross-device syncing sound like two great reasons to not emulate this in anything else

That you might end up having to pay for it and have your notes taken hostage.