I agree with the sentiment. You can make stylesheets for LaTeX, without changing the macros you call in your content, but it’s a somewhat arcane process. Go on the TeX Stack Exchange site and someone will explain how to do it if you want. I don’t need that. ConTeXt is better at this.

I’ve been doing my résumé in ConTeXt. Seems like it’s more expected in ConTeXt that you mess with the styling.

  \reshdr{Software Engineer, Yoyodyne}
  \ressub{November 1981--June 1984}
  \startresdesc
    Made a million widgets.
  \stopresdesc

It’s reasonably common & expected in ConTeXt to define your own macros for custom sections or whatever you need. ConTeXt has macros to define macros…

  \definehead[reshdr][subsection]
  \setuphead[reshdr][textstyle=\bfx,number=no,before=\vskip 1em,after={},align={flushleft,nothyphenated}]