You got a user friendly easy to follow guide? You can start by telling me what you mean by keys...

Is the implication that anything that is more complicated is necessarily less secure? Because I think that turns security on its head. A deadbolt is more complicated than a door with no lock.

We can argue about whether there is sufficient user demand and benefit to make secure boot easier for lay people. But that is completely orthogonal to whether it increases or decreases security of the system.