> why does it have to be the case that the leadership of an opensource project have to emulate [...] tech sector.

Because they live in the same places. They go to the same restaurants, they have the same conversations, they have personal friends at FAANG... they live and breath the same ideas, the same opinions, the same perspectives. They are in a bubble, and think "their" org should partake in the same behaviours as all the other companies out there - if anything, because it will be useful for their CVs when they inevitably look for a new job next month or next year. I don't blame them, it's inevitable human behaviour.

Maybe Mozilla should relocate the bulk of their leadership outside the US.