"Mozilla-based activities should be inclusive and should support such diversity."
Okay. If Eich was still there, this must logically be followed with:
"..Nevermind that one C-level guy over there who took positive action to deny some of you rights, this absolutely will not impact anything in any way and we as a company still hold these views of diversity and openness."
Having someone with his beliefs at such a high position makes the entire "diversity" thing ring rather hollow. No matter what you think of the whole situation, I think you can see the dissonance that would cause.
My experience with human beings is that precisely nobody can silo their beliefs like that.