[lucozade]

As you say, you can ignore this content today. And yet the authorities still feel obliged to make access to child pornography etc illegal. There is no reason to believe that changing the platform would change this stance.

Just because it can't be dealt with by threatening the odd CEO or two, doesn't mean that it won't be dealt with some other way. Now, it may be the case that governments react to a change like this and just accept that they can't control terrorism, child porn etc etc. But it would be astonishingly naive to assume that that's the most likely outcome.