

Around 5 years ago, still in reddit I did a comparison between US and EU crime rates. Despite my prejudice against the US most crimes were fairly similar (robberies, burglaries, assault), it was homicides where the US goes batshit insane.
I believe it must be the availability of guns (even on the defending side, making the criminals more aggressive) that makes a homicide happen alongside a robbery where it does not in EU.
You do realize that playing music on anything but a tiny speaker requires more power than BT+headphones? Even playing it loud in the built-in speakers can be note wasteful than later versions of Bluetooth.
Bluetooth transmission power costs are insignificant. But you don’t need to justify preferring the option to have regular wired earbuds on a phone.