This is about the practice, not the practitioners.

When I read your message, my takeaway is, "Science as a process is so reliable that you can take irrational beings who believe in a ghost father, teach them the scientific method and generate provable rational outcomes that yield progress."

The rational 'machine' is what matters, I could not care less about the irrational thoughts of the 'gears'.

TLDR, People are irrational, yep, even scientists. Thank goodness even irrational beings can follow a rational process.

Yeah but they don't use it to do their job.

Their thesis director?

I would like to know what they mean by that. Like a Spinoza-Einstein higher power, or a diest higher power, or go to services once a year higher power...

Belief in a higher power is pretty vague. If you pushed me I might concede that since I believe that our universe has operating laws and humans have the ability to understand them I believe in a higher power that is our understanding of these laws. That the community that is humanity can produce a collective understanding that is greater than we can produce as individuals. In this very vague sense I believe in a higher power. I would prefer we just call it our collective knowledge but whatever.

Isaac Newton was a christian. Seems like theres room to believe and also be awesome in science. But maybe its as rare as the Newtons of history are