How big is the demand for this kind of lockdown?
It can help users security, but most users have no idea what this is. Software should be
secure by itself, without users needing extra effort.
As a since-last-century Linux user, I'm choosing Fedora
exactly to NOT have all this signing/trusted boot
complications on my systems and I do not see a reason
to turn Fedora into Android (or, worse, iOS).
This will not turn fedora even remotely similar to iOS or Android. You still completely
control userspace, and can modify the kernel if you want, you just need to run the command
to resign the kernel. You can also easily disable, and have no impact to the rest of the
system, other than reduced security.