It is weird but I try to resist the conspiratorial take.

It may be as simple as:

* they believe they’re going to make trillions no matter what

* they’ve seen tobacco and what’s coming for oil companies and figure nobody will be able to say they hid the dangers

* they see a 100+ party prisoner’s dilemma and know that someone will defect so the optimal strategy is to defect

To me that seems a lot simpler.