Unsurprisingly I entirely disagree with you.

One of the reasons I publish content on my own site is so that, when it is relevant, I can link back to it rather than saying the same thing over and over again in different places.

In this particular case someone said "I see no mention of prompt injection from Anthropic or OpenAI in their announcements" and it just so happened I'd written several paragraphs about exactly that a few hours ago!