I too believe that is the intention. It makes sense. I just can’t figure out what prevents 90-loaderentry.install from overwriting the file for everyone but me! 
(Yes coming later and overwriting the file is more accurate, “winning” was just loosely speaking.)
Would you (or anyone else) consider adding -xv on the first line of 90-loaderentry.install, the #! line, and then run kernel-install manually once more? I’d appreciate it very much.