I love this kind of stuff too, but too many times over the years I've found myself in environments without some of these higher level and more niche tools (including my own dot files), or the tool ends up abandoned, and I struggle to remember how to use the basics/builtins. I've gotten a lot more conservative about adopting them because of that.
Pretty much my take as well. I imagine spending a few hours a month customizing your shell and text editor (hello vim/Emacs folks) to be more efficient and powerful is _great_ for developers who rarely leave their own workstation. But I spend much of my day logging into random hosts that don't have my custom shell scripts and aliases, so I'm actively careful not to fill my muscle memory with custom shortcuts and the like.
Of course, I _do_ have some custom shell scripts and aliases, but these are only for things I will ever do locally.
