If a discussion should have any value and not be only a game of propaganda and counter-propaganda, one should not try to hide disadvantages and tradeoffs. The main property that LN channel balances are sharing with IOUs is obviously that it is possible that one party runs away with the money of the other one (if the other isn't watching his/her channel and settling), because of a disagreement about "how much one owes to the other".

But that isn't of much relevance, because if you're watching your channels regularly, in the case this conflict happens, you can always call an extremely reliable arbitrator (the Bitcoin blockchain).

So what I'm saying basically is that "even if LN shares properties with IOUs, that is no point for FUDsters." So the complete argumentation of these people falls to pieces.