What the OP is saying that this doesn't have to be a perpetual state. Once you invest effort early on getting it right you often don't need to touch it, beyond a few tweaks now and then. The maintenance burden definitely declines over time.
Then all you need is a storage solution like git and GNU Stow or the various clones (plenty of good ones around or just use a basic dir).
There are a few preconfigured configs on github, ala oh my ZSH but for Vim or Emacs. That's one solution.
But otherwise if you're not a fan of this config heavy approach then it's not for you. Just like using Linux desktop vs Mac. I love the configurability of Archlinux and I've similarily reached a mature point in my configs where setting up a new machine is zero work and I rarely need to tweak it, nor does it ever 'break' (which is a side effect of constant change).