Are these people of note? The title could be a lot more contextually relevant
Frazelle was one of the people responsible for Docker.
I think Tuck is a finance guy who used to be a sysadmin? And he was COO of Joyent for a while, apparently.
How did Oracle kill the Sun blogging culture? What/Who was the Sun blogging culture?
There was a _huge_ amount of official-unofficial documentation in the blogs that disappeared from the Sun site when Oracle ran its bulldozer through it.
A better question would be "What didn't Oracle do to kill the Sun blogging culture?"
[1] https://blog.jessfraz.com/post/dogfooding-docker-to-test-doc...
EDIT: Got Microsoft and GitHub the wrong way around.
She went from Microsoft->Github, not the other way around, but other than that you're correct.