If theft of coins due to fatal flaws in Segwit does occur, then I think a new fork will become the new real Bitcoin... not Bitcoin Cash and not Bitcoin Satoshi. Similar to how Ethereum and Ethereum Classic split. Segwit will be fixed/removed from the codebase and the chain rolled back to before the attacks, and then due to Social Consensus Bitcoin (Segwit then minus Segwit) will become the real Bitcoin, and Bitcoin Segwit will become an alternative cryptocurrency. Bitcoin Cash and Bitcoin Satoshi will remain an ALT coin.
This. Theft happened within the ethereum network, so they forked it to a state before the theft and people received their coins back. The same would happen with bitcoin, in case it have a massive stealing.
But in the case of ethereum, it was hackers who stole it. In this case, this FUDster is saying that the miners would steal it. Theres no reason why miners would do that, as they receive fees and rewards, and are supported by the network. If they would steal, the network would collapse and so would their profits.
The only way for a massive stealing would be someone hacking the second layer, the LN itself. But for this, it would require a centralized structure, like the one on the ethereum network. Guess what, bitcoin is decentralized, and is continuing to be so even after SegWit. And I dont think LN will be centralized as anyone will be able to run its nodes.
Now try to run Mist. I tried to synch it some months ago, spent three weeks with computer turned on 24/7, and never synched. Even tried Geth, it never worked. Ethereum is a centralized network, my computer cant run a node on it, whereas I run BTC and LTC nodes pretty well.