Wait, what? Alright, let's start from the beginning.
"Hell, for that matter, what exactly is this position everyone keeps ascribing to him?"
It may seem like we can't really tell, because he never really openly commented on this, but what we do know is this:
* he donated $1,000 of his own money to support Proposition 8
* the full text of Proposition 8 (according to Wikipedia):
Section I. Title
This measure shall be known and may be cited as the "California Marriage Protection Act." Section 2. Article I. Section 7.5 is added to the California Constitution, to read:
Sec. 7.5. Only marriage between a man and a woman is valid or recognized in California.
Is it really hard to figure out that Brendan Eich is a man who would pay $1,000 so that two consenting people in love can not marry if they are of the same sex?
I am not a gay person myself and I think it's safe to assume you are neither. And you might have read http://www.teamrarebit.com/blog/2014/03/24/goodbye_firefox_m... by now. But I really recommend doing a little bit of a research on the topics of gay marriage and LGBTs to see what exactly is wrong with his belief that LGBT people don't deserve basic human and civil rights.
Note: I was only responding to the quoted text. It's a whole another issue whether he should resign as a CEO of an organization that prides itself for being open and inclusive (or at least issue an apology and/or a statement of his changed mind on this issue). Also another question is whether it is the right solution to boycott a whole company which I am sure is full of people who do not agree with the new CEO's belief.