Trademarks

"Isn't it a bit strange that you need not debug any legalese when setting up Linux Weekly News but a Fedora Weekly News would absolutely require it. Yet undoubtedly Linux is the stronger trademark here"

Linux is a stronger brand. It isn't clear that Linux as a trademark can be effectively enforced anymore however.

"Any time you are required to give up certain rights to participate in a community, that's a sure sign it's a community you don't want to be part of."

And yet, I can't think of single community where you don't give up atleast some rights. Generalizations will only take you so far.