I agree with your post in full.  I posted the news entry because I saw that it has been recently posted again, but I remember reading in the past about data of various types being embedded in the blockchain.  I certainly didn't intend on creating any FUD, I just wanted to know from a technical perspective what would be involved in mitigation.

I agree that if there's ever a real need to mitigate against this, that selective pruning probably be the best approach to take.  Frankly, it would be ridiculous to have to do that but I try to look at things from the perspective of devil's advocate in order to have ready answers if questions are ever raised.

I appreciate your analogy and agree that extracting a useful image from the blockchain would require work/code.  Any sufficiently long string of text could be arranged in many ways to create all sorts of "bad" data.

I don't think this is a problem worth worrying about.

Best regards,
Ben