I posit that Zed gets far
more recognition than he deserves because he puts himself out there and actually does manage his PR pretty well.
There are people at the Googleplex that have done amazing work - filesystems, webservers, machine-learning algorithms, core changes to the ranking algorithm, all significantly higher performance & quality than what Zed has written, stuff that gets millions of queries per day and is crucial to folks' everyday existence. If you Google their names, you might come up with a lone blog post on the Googleblog giving a 5-minute soundbite on what they do, or an academic paper from 1994 detailing some obscure technical contribution to a programming language that nobody knows.
I remember that when I was working for startups and small companies, I thought that most software development happens "out there", in the open-source cloud, and really looked up to the prominent figures in the open-source world. Then I got to Google, and realized that what I knew from the public papers was barely the tip of the tip of the iceberg. Now I have to assume that other large corporations - other tech companies, Wall St. - have similarly impressive secrets locked up behind their confidentiality walls, stuff that we'll never know about but that is far better than the best open-source alternatives around.