Netflix uses FreeBSD for certain parts, but IIRC it's Linux outside of the streaming delivery.

(Some of the team members lurk around here, maybe we'll get lucky and one comments)

I'd say regardless of the OS, you might find a company like Netflix is less likely to impose security-theatre box ticking exercises.

Which makes it less likely to take a 3rd party agent from a snakeoil company that sells to execs, then embed it at low levels into mission critical services with elevated privileges, then give it realtime external updates that can break your platform at any point.

Even better!