I came across this thread on twitter this morning but isn't he the CEO / co-founder and he's clearly a man? I guess I don't get the reference. I know he has a co-founder who's a female, maybe she was lead at the time?

"1. A Sequoia partner passed on Cloudflare because he didn’t think a woman could lead a security infrastructure company. Seriously. "

He's referring to Michelle Zatlyn afaict.

"Young Global Leader '14. Co-founder, President + COO Cloudflare"