Collosal UX failure for who? Morons that think an interactive server can be run from a phone?

That's aways been true, more importantly, Ark doesn't solve any of it.

Channels and liquidity are easily automated.

Onlineness to receive is true of anything interactive, the chain is unique in that coins are signed over... That's not possible on ANY L2. You can't receive without trust even in Ark, because you need to be in contact with the counter party and chain to get chain security.

The pre-spend moves to the coordinator, same can be true of an LSP.

Rebalance trivially automated.

Ark's are even more centralized than LSP's.

Good luck onboarding the Global South to this hot mess

That'd be a retarded objective, they don't have any money to spend. Lightning however lets enterprising people to earn.

The immediate use-case for Lightning is primarily machine to machine on low margin ephemeral relationship services currently subject to chargeback.