"their site owners, moderators, administrators, and users are required to comply with the Fedora Code of Conduct. Community sites and accounts which are unable to meet this standard of conduct will be required to cease use of the Fedora trademarks,"
I wasn't previously aware of it, but [3] may also be relevant. (I know no more than appeared on the devel list, other than history elsewhere.)
They may have cocked up the case, but a finding of bad faith against Red Hat seems unlikely to be fair, given the above.
1. https://fedoraproject.org/wiki/Legal:Trademark_guidelines?rd...
2. https://lists.fedoraproject.org/archives/list/devel@lists.fe...