Regardless, this is still fair criticism. This would be like seeing in the scrolling banner of "Breaking News" on CNN "<Insert Well Known Person in their field> quits job at <Insert large company>"
Belongs in maybe the entertainment or business section, maybe, section, but wouldn't classify it as "tech news"
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Having thought about it a little more, I can see a valid case when said person in question, considered monumental enough, leaves a platform, business or field and is reported as news. I guess it's more of a reflection of how little HN'ers (including myself) think of Facebook in the grand scheme of things. It's just a website. What's next, we report that he or she has left Flickr or Reddit? That's kind of what I think GP and myself were getting at. Now if this person was the founder of Facebook, or instrumental in the success of the platform, and then decides to leave, I think absolutely it would be tech news.
Walt had a pretty impressive group of friends:
https://www.slashgear.com/walt-mossberg-steve-jobs-and-bill-...
Also a reminder how crazy young the field of computer science is -- important figures are still as young as 62! Kind of cool in a way. I hope to get to meet him in person.
EDIT: Right after posting this, I realized my world was ambiguous - "my world" is simply the people I interact with and the information that flows between us - not making a qualitative judgement.
Any guy quitting facebook (who can sign up again for free in a heartbeat, it's zero risk) is an event, granted. Might as well talk about the time someone quit selling on eBay or had a video removed by Youtube or went to Ohio. It doesn't mean anything until you sensationalize it. This indicates that it is not news, but raw sensationalism.
I suppose one could spend an entire tech career having never heard the name Doanald Knuth, but I wouldn’t wear that as a badge of honor.
Mossberg is hardly on the level of Knuth, but it does cause me to wonder if the cave you must live in is damp enough to cause problems with computing gear.
Maybe the better question is, is Walt Mossberg still relevant to the technology scene?