[acdha]

You're letting your personal politics cloud the facts. Firefox was struggling well before that point, not because it was bad but because Google was pouring enormous amounts of money into Chrome and the only way you don't lose in that situation is if the competition screws up.

Firefox had a big decade because Microsoft put IE on a starvation diet after Netscape folded but Google shows no sign of making a similar level of error. Firefox has never been better technically but at the end of the day they're fighting on the wrong side of a war which will be decided by budgets.