When you start having more than two peers and want them all to communicate, it starts getting unwieldy to expand the mesh, because that's not built in to Wiregu

When you start having more than two peers and want them all to communicate, it starts getting unwieldy to expand the mesh, because that's not built in to Wireguard. You can certainly still do it, even run your own coordinator (like headscale for tailscale), but it probably saves you time and headache on medium to large meshes.