Apple is very clear that this is how things work now. They even give you a dialog prompt now to inform you of this change the first time you try to shut your device off - https://9to5mac.com/2021/06/07/ios-15-find-my-network-can-fi... I'm not sure why this is presented as some new thing, or a gotcha or whatever this is. We've known about it for months... And IMO, it's a positive change although it does sound a little…
hmmm maybe because a monopolistic firm is repurposing the term 'power off'?