> This simply isn't the case. Free Sofware— and the success of our ecosystem— depends on not just the ability to be personally free but to have the freedom to pass those rights on to other people.
You still have this right (with or without secure boot). Fedora has no obligation by *any* license that can be called free to help your fork. Either by making there software less usable or anything else. All they have to do is to provide you the source and tools needed to create the fork.
And they *do* that. You have the source. You have the tools. If you want to sign it ... fine pay the 99$ and go ahead. If you don't or even can't (because you cannot afford the 99$) that's fine as well this does not make the software any less free.
By your logic Fedora is not free already because they have a competitive advantage over forks by having infrastructure (builders, mirrors, bug tracker...). All those cost way more then the stupid 99$. Oh and the trademark and marketing budget.