Hello, you might have read some things about this topic that aren't correct, because sadly the press has in general done a very poor job at fact-checking this story. Since you care deeply enough to send this message instead of silently turning your back on us, you might be interested in some attempts to clear up a lot of this misinformation:

Here is a short collection of facts about what happened: https://blog.mozilla.org/blog/2014/04/05/faq-on-ceo-resignation/ and here's a longer version written by an employee in a blog post: https://medium.com/p/7645a4bf8a2

Brendan didn't have to leave Mozilla - we would like nothing better than to rehire Brendan. In fact, we didn't want him to leave in the first place. However it was his personal decision to resign among all this ongoing frenzy, threats and mischaracterization of him as a person and the Mozilla community coming from third-parties, in order for the constant bombardment to end and to avert any further damage to Mozilla and its mission that he helped build for so many years.

So in this sad process we have lost a co-founder and brilliant technical mind and now the "other side" of the political spectrum comes along, again quite misinformed and rushing to judgement, bashing our community and voicing calls for boycotts against our products. This is quite sad & Mozilla has not deserved to be in the middle of all of this. Our community exists to protect the Web by promoting openness, innovation and opportunity and is no battleground to fight culture-wars upon...

Thank you!

I get the feeling that you came to the (wrong) conclusion that Mozilla only found out about his support prop 8 donation (made in 2008) after he went from CTO to CEO. This is not true as Mozilla knew about this donation since 2011 due to a article that was written at time. Thanks to California law where such donations require name, employer and it be public record somebody found it and wrote about then.

They knew about the donation and supported him for who he is as otherwise they would not have promoted him if they did not.

Unfortunately many individuals and article writers are assuming he was either fired or forced out all due to his personal decision to leave Mozilla for now instead of going back to CTO or another role capacity.

Also Mozilla is hardly closed minded as they support equality which includes LGBT. https://blog.mozilla.org/blog/2014/03/29/mozilla-supports-lgbt-equality/