I definitely agree that probably the biggest issue with #lightning is that most people use it with custodial wallets, and that's a strong centralizing force as well.
In that case it's easier to argue that ASPs on #Ark are better than the status quo. But the custodial nature of Lightning today is not a function of the protocol - it's a layer on top for better UX. Non-custodial wallet options can improve without having to change the way Lightning works fundamentally.
ASPs appear to be fundamental to Ark. That's a protocol layer issue.