Yep, I wish they would go the full way and block socket access entirely so your own outgoing traffic is always introspectable even with cert pinning. It would make it blatantly obvious when apps try shady shit.
I would love to have that back, but I was never able to find a firewall so hostile to the user experience of the general population.
Blocking socket APIs would break every app that supports other protocols. Goodbye file transfer apps, VPN apps, file sync apps, database tools, SSH clients, remote desktop clients, audio and video conferencing apps, etc.