At least Apple cares about user privacy.

"In related news, every VPN on iOS possibly still leaks data that could identify an iPhone or iPad's IP address, four years after ProtonVPN first reported the problem to Apple. As of August 2023, the issue persists."

This is why you shouldn’t connect your device to untrusted WiFi, rogue DHCP server detection exists for networks, and if you’re at risk for targeted attack, you really shouldn’t be carrying a smartphone at all.

The only thing private is what’s in your head (for now).