This doesn't even make sense. Blocking is blocking of network connection. Native apps still need that to talk back home
Telegram uses push notifications to update its server ips.
Native apps can be a bootstrap shim for a more distributed back-end. PWAs are not going to be loading off onion nodes or ephemeral distributed networks any time soon. Native apps, especially those that can side-load or update without the app stores, will always be more resistant to these sorts of attacks.