Worked at Xerox PARC, and project leader on the Alto.
Personally I'm glad they resist efforts to "improve" the site. I'm tired of the slippery slope of fast and information-dense sites becoming slow and information-sparse. Just my opinion, don't shoot me.
But that presupposes you know this black bar indicates someone's death, which is not the case of the person asking the question in the first place.
I had no idea seeing this black bar meant a death. I thought it meant a rendering error and gave a half second to reload the page, say hunh it's still there, and go on to something else. I came away with the impression somebody got design-y and changed things up for no real reason.
Edit: and for all the talk on this page about the bar, very little is being said about the man. Here's his Wikipedia page for anybody interested:
The answer is apparently Chuck Thacker.
I just scroll through page one until I see the word "died".
I feel weird that this thread is marked "[flagged]”. I’d read the post about Chuck’s passing yesterday, noticed the bar today, and still didn’t realize that’s what it was for. This thread is what answered that question for me.