Fedora is a Red Hat community project, a large majority of people involved with it daily are Red Hat employees (go check out fedora-devel and see how many @redhat.com addresses there are). New releases of RHEL are usually forked directly from Fedora, if you can't trust Fedora then you probably can't trust Red Hat.
You are right that RHEL != Fedora strictly, but each RHEL release is branched off Fedora at some point and starts undergoing additional QA and engineering work. I'm not really sure why you're making a distinction between people working on RHEL and Fedora, Red Hat doesn't pay (many, 35 full time employees according to the 2016 conference) people to tinker around with Fedora all day, there is a lot of community involvement but Red Hat has a lot of people on payroll who maintain core systems that are used by both projects (they just land in Fedora first because that's the incubator) - see systemd, GNOME, LVM, md, glusterfs, the list goes on and on and on. These people aren't necessarily "Fedora" or "Red Hat" developers, they are GNOME developers, etc., but they frequently are involved with Fedora since that is the incubator for future RHEL releases.
From what i understand they are hardly the same.