Thank you for posting the link to iOS presence detection WITHOUT Homekit or HA app (totally native). I agree its a much cleaner solution!
The only “nerdy” thing about it is the setting up of the Shortcut. That gets quite technical. But still falls within the native capabilities of HA and iOS without needing another app or hacks!
I’m currently testing IRL to see how it performs.
I struggled with the HA companion app location responsiveness, plus you need to keep it open in the background on iPhone I think