Great point.
LN hubs and nodes are on their respective layers of the network.
The fact that we seem to need these 'hubs' should tell people that LN may not be as great as they think it is, because they are a from of centralization and move us farther away from p2p cash.
in short LN = PERMISSIONED tx's.. (it needs other parties signature of agreement)
in short LN = reinventing chargeback risks(CSV) and 3-5 business day funds unavailable(CLTV)
in short LN = only good for small spending $60ish with 2week lockin-ish
thus dont think of it as the end solution to scaling. think of it like a side service like Xapo