Wow... You are right. On my old beaters adjusting the Bars, Stem, Seat, Seat Post is no big deal. But on a modern bike that could be a real chore and might not even be possible. I now see why some people are spending money for a professional bike fitting before making a new style bike purchase.

In my, "Ole Geezer, More Beat Up Than I look", condition, changing my bikes set up even just a few millimeters causes a noticeable change...