We (iroh) don't do birthday paradox hole punching yet. There is some internal debate whether it is worth it.
So if you are in an extremely weird NAT you will fall back to a relay, either our public relays, your own relays rented from us via iroh services, or a self-hosted relay.
But I would argue that a p2p social application that occasionally uses a relay is very much preferable to a centralised app.
The relay is generic internet infrastructure. It just forwards end to end encrypted connections. It can not learn anything about the content.
A relay that is hosted on a non KYC server rented via ZCash would be interesting though if you are super paranoid.
So if you are in an extremely weird NAT you will fall back to a relay, either our public relays, your own relays rented from us via iroh services, or a self-hosted relay.
But I would argue that a p2p social application that occasionally uses a relay is very much preferable to a centralised app.
The relay is generic internet infrastructure. It just forwards end to end encrypted connections. It can not learn anything about the content.
A relay that is hosted on a non KYC server rented via ZCash would be interesting though if you are super paranoid.