Having the best pool of workers in the world aren't going to make a difference[1] if they are working for power-mongers who use outrage to achieve a coup.
The reverse is not true - having fewer skilled workers to choose from can be irrelevant when they are working for someone who is focused on goals that are aligned to the user.
IOW, there's no point in having the absolute best and the brightest people employed by self-serving schemers who wanted to use firefox as a vehicle for their political/virtuous ambitions.
There might be, however, a point in having "only" the 90% best people employed towards making firefox better.
[1] And, it looks like it didn't make a difference.