Most analogies are flawed. However, one could say that the removal of the hood does create aerodynamical issues too. Having the grub screen shown for 5 seconds does take longer and *drags* out. (pun intended also). I'm sure we could go all day with you picking holes in the analogy, and me plugging them up until we have an analogy that is as complex than the issue itself.
Also, this was a thread about the bootloader. Not sure why you bring up the installer. Did i mention that I want icecream?