I'm not a native speaker, but the right meaning is the one that came to mind reading this title.
I think context makes it clear, and the most likely meaning. If it was Firefoxs CEO the one at fault, I would think it's a ver weird way of saying it.
But I also see people saying this is why Firefox is the worst and I'm not sure I got it right by accident, people have low reading comprehension or just a massive bias.