I would say it is an excellent building block for application developers to route around the segmentation. There are several projects that work well in restricted enviroments that use iroh for some features. E.g. https://delta.chat/en/

E.g. you could write an excellent encrypted chat app using iroh, the Tor or Nym custom transport, and BLE or direct wifi for local connections.

You have to be careful though to make sure you configure the transports correctly in order not to expose data you don't want exposed. Iroh can be used in highly restricted environments, but the defaults favour performance over complete metadata privacy.