They're not getting rid of the old blocking API, though.
Yet.
When Google makes it contingent on their annual "donation", they will.
That donation may well be just as important for google than it is to mozilla. They are much better off without a huge lawsuit and paying out “pennies” each year.
Yes, it's an important donation - for stifling competition. There is more than one way to monopolize the market.
I worked there as an engineer for just under 9 years. Google does not give Mozilla engineering its marching orders.