Anchoring the reader’s opinion by using the phrase “Missionaries” is pure marketing. Missionaries don’t get paid huge dollars or equity, they do it because it’s a religion / a calling.
Ultimately why someone chooses to work at OpenAI or Meta or elsewhere boils down to a few key reasons. The mission aligns with their values. The money matches their expectations. The team has a chance at success.
The orthogonality is irrelevant because nobody working for OpenAI or Meta is a missionary.