There are notification apps to replicate the feature. A single pixel lighting on an OLED screen uses no more energy than a physically separate led. The CPU isn’t sleeping to update the notification led either way.
Appreciate the response. Figured this was “easily” do-able, but I honestly remember not being able to find anything pre-implemented for this a couple years ago when I last checked. Maybe my search, then, idk… Anyways, yeah, physically separate LED do sound a lot more obsolete with that in mind