

Because you’re only ‘exposing’ the port on the peer to peer network.
You “publish” a port to holesail, then clients have to create a local proxy via holesail before they can access it.
I agree, It’s a dumb pointless claim. But I don’t think it’s misleading.
It looks like holesail is just tailscale, but on a much smaller scale. It’s not networks, it’s just ports.

You can run it on pretty much every esp.
I’ve had issues with getting it working on lilygo devices, but had no problem with basic cheap “devkits” from AliExpress.