Re: Question about truss rod covers
Best guess: Same reason some guitars have pickguards, pickup rings, binding, intricate inlays, etc.
Just for aesthetic reasons.
You'll also notice on the guitars that don't come with one the paint in the truss pocket is much cleaner than on one that does, purely aesthetic... it serves no useful purpose to do that, other than to look good.
And you look maaahhvelous!
(I wonder how many 'kids' here will know where that's from.
I get it, but I liked the Landshark skits the best.