>vulnerable people don't need to use such a feature
Vulnerable people often do not have a choice in the matter. Pre-installed, widely-advertised features are significantly more dangerous because somebody who is controlling isn't necessarily thinking of new ways to monitor, but they'll sure take advantage of any they know about.
It's the same problem as Apple's AirTags: GPS trackers existed long before them (and are harder to detect), but you can get a 4-pack of AirTags at the store and they're super easy to use.
Vulnerable people often do not have a choice in the matter. Pre-installed, widely-advertised features are significantly more dangerous because somebody who is controlling isn't necessarily thinking of new ways to monitor, but they'll sure take advantage of any they know about.
It's the same problem as Apple's AirTags: GPS trackers existed long before them (and are harder to detect), but you can get a 4-pack of AirTags at the store and they're super easy to use.