I'm pretty sure that if there are potentially breaking problems with LN, that they will be discovered early on as it will surely be extensively tested as soon as any version comes live. Even if something starts going wrong (e.g. a bad entity being able to steal money from someone else), that isn't such a huge problem as long as there are no 'bail-outs' as the one proposed in ETH. The bigger problem is losing immutability and decentralization as opposed to losing X amount of funds. People will eventually recover (as we've unfortunately experienced multiple times already, and Mt.Gox is one example of that).

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The Classic folks over at r/btc are exploiting this situation to attack Segwit while over-blowing the complexity of it.