However, I believe the split here comes whether this is a "political issue" or a "human rights issue". In my opinion, it's human rights. And I believe any company should ensure that its employees are not fighting against equality. I guess this also ties into equality for its employees. I assume there are LGBT employees of Mozilla, and I think they must feel pretty uncomfortable right now.
Unfortunately (again, in my opinion, etc.), it's treated as a political standpoint, something that big parties can argue about. But it isn't - it's about whether LGBT individuals have the same rights as straight people.