There's no question that the hard 90-day deadline of Google's Project Zero is undermined by collisions with holidays and other calendar events, but Patch Tuesday is a restriction that Microsoft imposes on itself and its users. They had advanced warning and an opportunity to work within the limits of their own policy or roll out an unscheduled update.
Even so, this is a clash of two policies and Google needs to reevaluate its deadline (is 120 days better for everyone, including users?).