The unawareness of the importance of privacy even as a cautionary stance is spread even in the learned, some convinced that we live in a riskless fair world of free thought and expression without consequence - there are people of prominent intellectual profile vocal against online pseudonyms, for example. There are political representatives proponents of the end of online anonymity.
So, no, when somebody makes those statements about child abuse and drug trafficking, they may not be joking.
For the rest: do not abuse the assumption of good faith. There are other places than HN to abuse informal attitude.
Edit: for both cases, replies to secondaryacct and yourself: you do have the rule about assumption of good faith in the guidelines present, don't you?
Now, this thread was about computing devices, branching towards security, privacy and its importance - not linguistics -, and your comments may be interpreted as intellectual curiosity as per the rules, but can more easily be interpreted as a mockery - as already mentioned. I am open to questions, but I think it proper for that to happen in a different context.
If you are going to joke, kindly mark it, so we do not misunderstand you, and so you do not cause internal damages to those who are not trained to always keep neurovegetative and limbic on guard while reading - you know, that occasional moment in which you trust what you read and the physiological reactions start, before the prefrontal goes "wait a moment, that may be not serious".
People have
-- a privacy to defend as a principle («privacy to defend», what times!),
-- absurdity to keep at bay (interrobangs have a cost - the paragraph above is relevant),
-- security to ensure (information which ends up in weakly protected repositories is basically public),
-- safety to strengthen (sociopolitical systems can make people pay for any minor trait)
and more?